FORM 6-K

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Report of Foreign Private Issuer

Pursuant to Rule 13a-16 or 15d-16 of

the Securities Exchange Act of 1934

For the month of October 2007

001-14832

(Commission File Number)

CELESTICA INC.

(Translation of registrant’s name into English)

12 Concorde Place, 5th Floor

Toronto, Ontario

Canada M3C 3R8

(416) 448-5800

(Address of principal executive offices)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F:

Form 20-F x                                                                  Form 40-F o

Indicate by check mark whether the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1): o

Indicate by check mark whether the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7): o

Indicate by check mark whether by furnishing the information contained in this Form, is the registrant also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934.

Yes o                                                                                                                No x

If “Yes” is marked, indicate below the file number assigned to the registrant in connection with Rule 12g3-2(b): 82-              

Celestica Inc.

Form 6-K

Month of October 2007

The following information filed with this Form 6-K is incorporated by reference in Celestica’s registration statements, the prospectuses included therein, and any registration statement subsequently filed by Celestica with the Securities and Exchange Commission:

•                  Press Release, dated October 15, 2007, the text of which is attached hereto as Exhibit 99.1 and is incorporated herein by reference.

•                  Celestica Inc.’s second quarter 2007 consolidated financial information, the text of which is attached hereto as Exhibit 99.2 and is incorporated herein by reference.

Exhibits

99.1 -  Press Release, dated October 15, 2007

99.2 -  Consolidated Financial Information

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

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EXHIBIT INDEX

99.1 -  Press Release, dated October 15, 2007

99.2 -  Consolidated Financial Information

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Exhibit 99.1

(All amounts in U.S. dollars.

Per share information based on diluted

shares outstanding unless noted otherwise.)

CELESTICA ANNOUNCES ADJUSTMENT TO

NON-CASH, DEFERRED TAX RECOVERY REPORTED

IN THE SECOND QUARTER ENDED JUNE 30, 2007

TORONTO, Canada - Celestica Inc. (NYSE, TSX: CLS), a global provider of innovative electronics manufacturing services (EMS), today announced an adjustment to a non-cash, deferred tax recovery previously reported in the second quarter ended June 30, 2007.

The company has determined that the assumptions used in the second quarter to record a non-cash, deferred tax recovery relating to a tax benefit resulting from a previous year’s write-down of an acquired and subsequently restructured Canadian operation were incorrect. An error in the cost basis for tax purposes of that Canadian acquisition led to the incorrect presumption that a tax benefit could be realized in the second quarter. Accordingly, deferred tax recovery and GAAP net earnings for the three and six months ended June 30, 2007 have been adjusted downward by $44.1 million, respectively. Basic and diluted GAAP earnings per share for the three and six months ended June 30, 2007 have been adjusted from $0.11 and $(0.04), respectively to $(0.08) and $(0.23), respectively. The company has adjusted its prior period balances in accordance with accounting standards and is filing amended financial statements to reflect the change.

The change to the deferred tax recovery has no impact on reported adjusted net earnings and adjusted net earnings per share for the second quarter of 2007 of $4.9 million or $0.02 per share,  respectively, and has no impact on revenue, operating earnings or cash. (Adjusted net earnings is defined as net earnings before amortization of intangible assets, gains or losses on the repurchase of shares and debt, integration costs related to acquisitions, option expense, option exchange costs and other charges, net of tax and significant deferred tax write-offs or recovery).

The company also reconfirmed its revenue outlook for the third quarter ended September 30, 2007 of $2.0 billion to $2.2 billion, and its expected adjusted net earnings per share of $0.04 to $0.12.

The company’s third quarter results will be released on Thursday, October 25, after markets close, followed by a webcast at 4:30 p.m. which can be accessed at www.celestica.com.

Supplementary Information

In addition to disclosing detailed results in accordance with Canadian generally accepted accounting principles (GAAP), Celestica also provides supplementary non-GAAP measures as a method to evaluate the company’s operating performance.

Management uses adjusted net earnings as a measure of enterprise-wide performance. As a result of acquisitions made by the company, restructuring activities, securities repurchases and the adoption of fair value accounting for stock options, management believes adjusted net earnings is a useful measure for the company as well as its investors to facilitate period-to-period operating comparisons and allow the comparison of operating results with its competitors in the U.S. and Asia. Adjusted net earnings excludes the effects of acquisition-related charges (most significantly, amortization of intangible assets and integration costs related to acquisitions), other charges (most significantly, restructuring costs and the write-down of goodwill and long-lived assets), gains or losses on the repurchase of shares or debt, option expense and option exchange costs, and the

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related income tax effect of these adjustments and any significant deferred tax write-offs or recovery. Adjusted net earnings does not have any standardized meaning prescribed by GAAP and is not necessarily comparable to similar measures presented by other companies. Adjusted net earnings is not a measure of performance under Canadian or U.S. GAAP and should not be considered in isolation or as a substitute for net earnings (loss) prepared in accordance with Canadian or U.S. GAAP. The company has provided a reconciliation of adjusted net earnings (loss) to Canadian GAAP net earnings (loss) below.

About Celestica

Celestica is dedicated to providing innovative electronics manufacturing services that accelerate our customers’ success. Through our efficient global manufacturing and supply chain network, we deliver competitive advantage to companies in the computing, communications, consumer, industrial, and aerospace and defense end markets. Our employees share a proud history of proven expertise and creativity that provides our customers with the flexibility to overcome any challenge.

For further information on Celestica, visit its website at http://www.celestica.com. The company’s security filings can also be accessed at http://www.sedar.com and http://www.sec.gov.

Safe Harbour and Fair Disclosure Statement

This news release contains forward-looking statements related to our future growth, trends in our industry, our financial and or operational results, and our financial or operational performance. Such forward-looking statements are predictive in nature, and may be based on current expectations, forecasts or assumptions involving risks and uncertainties that could cause actual outcomes and results to differ materially from the forward-looking statements themselves. Such forward-looking statements may, without limitation, be preceded by, followed by, or include words such as “believes”, “expects”, “anticipates”, “estimates”, “intends”, “plans”, or similar expressions, or may employ such future or conditional verbs as “may”, “will”, “should” or “would”, or may otherwise be indicated as forward-looking statements by grammatical construction, phrasing or context.. The risks and uncertainties referred to above include, but are not limited to: variability of operating results among periods; inability to retain or grow our business due to execution problems resulting from significant headcount reductions, plant closures and product transfer associated with major restructuring activities; the effects of price competition and other business and competitive factors generally affecting the EMS industry; the challenges of effectively managing our operations during uncertain economic conditions; our dependence on a limited number of customers; our dependence on industries affected by rapid technological change; the challenge of responding to lower-than-expected customer demand; our ability to successfully manage our international operations; and delays in the delivery and/or general availability of various components used in the manufacturing process. These and other risks and uncertainties and factors are discussed in the Company’s various public filings at www.sedar.com and www.sec.gov, including our Form 20-F and subsequent reports on Form 6-K filed with the Securities and Exchange Commission.

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RECONCILIATION OF GAAP TO ADJUSTED NET EARNINGS

(in millions of U.S. dollars)

(1)  Non -cash option expense included in cost of sales and SG&A is added back for adjusted net earnings

(a)  See note 2 to the Restated Consolidated Financial Statements

GUIDANCE SUMMARY

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Exhibit 99.2

CELESTICA INC.

CONSOLIDATED BALANCE SHEETS

(in millions of U.S. dollars)

Guarantees and contingencies (note 12)

(a) See note 2

See accompanying notes to consolidated financial statements.

These unaudited interim consolidated financial statements should be read in conjunction with the

2006 annual consolidated financial statements.

CELESTICA INC.

CONSOLIDATED STATEMENTS OF OPERATIONS

(in millions of U.S. dollars, except per share amounts)

(unaudited)

(a) See note 2

See accompanying notes to consolidated financial statements.

These unaudited interim consolidated financial statements should be read in conjunction with the

2006 annual consolidated financial statements.

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CELESTICA INC.

CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS

(in millions of U.S. dollars)

(unaudited)

See accompanying notes to consolidated financial statements.

These unaudited interim consolidated financial statements should be read in conjunction with the

2006 annual consolidated financial statements.

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CELESTICA INC.

CONSOLIDATED STATEMENTS OF CASH FLOWS

(in millions of U.S. dollars)

(unaudited)

Cash is comprised of cash and short-term investments.

Supplemental cash flow information (note 9)

(a) See note 2

See accompanying notes to consolidated financial statements.

These unaudited interim consolidated financial statements should be read in conjunction with the

2006 annual consolidated financial statements

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CELESTICA INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(in millions of U.S. dollars, except per share amounts)

(unaudited)

1.     Significant accounting policies :

We prepare our financial statements in accordance with generally accepted accounting principles (GAAP) in Canada with a reconciliation to accounting principles generally accepted in the United States, disclosed in note 20 to the 2006 annual consolidated financial statements.

The disclosures contained in these unaudited interim consolidated financial statements do not include all requirements of Canadian GAAP for annual financial statements. These unaudited interim consolidated financial statements should be read in conjunction with the 2006 annual consolidated financial statements. These unaudited interim consolidated financial statements reflect all adjustments, consisting only of normal recurring accruals, which are, in the opinion of management, necessary to present fairly our financial position as at June 30, 2007 and the results of operations and cash flows for the three and six months ended June 30, 2006 and 2007. These unaudited interim consolidated financial statements are based upon accounting principles consistent with those used and described in the 2006 annual consolidated financial statements, except for the following:

Change in accounting policies:

(a)  Financial instruments:

Effective January 1, 2007, we adopted the new standards issued by the CICA on financial instruments, hedges and comprehensive income. Section 1530, “Comprehensive income,” Section 3855, “Financial instruments — recognition and measurement,” Section 3861, “Financial instruments – disclosure and presentation,” and Section 3865, “Hedges,” were effective for our first quarter of 2007. We were not required to restate prior results.

On January 1, 2007, we made the following transitional adjustments to our consolidated balance sheet to adopt the new standards:

The details of the transitional adjustments are noted below.

The impact of the new standards on our operations for the three and six months ended June 30, 2007 is as follows:

The new standards require all financial assets and liabilities to be carried at fair value in our consolidated balance sheet, except for loans and receivables, held-to-maturity investments and non-trading financial liabilities, which are carried at their amortized cost. We do not currently have any financial assets designated as available-for-sale.

All derivatives, including embedded derivatives that must be separately accounted for, are measured at fair value in our consolidated balance sheet. The types of hedging relationships that qualify for hedge accounting have not changed under the new standards. We will continue to designate our hedges as either cash flow hedges or fair value

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hedges. In a cash flow hedge, changes in the fair value of the hedging derivative, to the extent effective, are recorded in other comprehensive income/loss (OCI) until the asset or liability being hedged is recognized in operations. Any hedge ineffectiveness is recognized in operations immediately. For hedges that are discontinued before the end of the original hedge term, the unrealized hedge gain/loss in OCI is amortized to operations over the remaining term of the original hedge. If the hedged item ceases to exist before the end of the original hedge term, the unrealized hedge gain/loss in OCI is recognized in operations immediately. In a fair value hedge, changes in the fair value of the hedging derivative are offset in operations by the changes in the fair value relating to the hedged risk of the asset, liability or cash flows being hedged.

Derivatives may be embedded in financial instruments (the “host instrument”). Under the new standards, embedded derivatives are treated as separate derivatives when their economic characteristics and risks are not closely related to those of the host instrument, the terms of the embedded derivative are similar to those of a stand-alone derivative, and the combined contract is not held for trading or designated at fair value. These embedded derivatives are measured at fair value with subsequent changes recognized in operations. We have elected January 1, 2003 as our transition date for identifying contracts with embedded derivatives. Currently we have prepayment options that are embedded in our Senior Subordinated Notes which meet the criteria for bifurcation. The impact of the prepayment options on our consolidated financial statements is described under the transitional adjustments below and in note 4(d).

The new standards require that we present a new “consolidated statement of comprehensive income/loss” as part of our consolidated financial statements. Comprehensive income/loss is comprised of net income/loss, changes in the fair value of derivative instruments designated as cash flow hedges and the net unrealized foreign currency translation gain/loss arising from self-sustaining foreign operations, which was previously classified as a separate component of shareholders’ equity. Subsequent releases from OCI to operations is dependent on when the hedged items designated under cash flow hedges are recognized in operations, or upon de-recognition of the net investment in a self-sustaining foreign operation.

In determining the fair value of our financial instruments, we used a variety of methods and assumptions that are based on market conditions and risks existing on each reporting date. Broker quotes and standard market conventions and techniques, such as discounted cash flow analysis and option pricing models, are used to determine the fair value of our financial instruments, including derivatives and hedged debt obligations. All methods of fair value measurement result in a general approximation of value and such value may never actually be realized.

The transitional impact of recording our derivatives as at January 1, 2007 at fair value on our consolidated financial statements is as follows:

(i)          Cash flow hedges:

As at January 1, 2007, we recorded derivative assets of $5.8 and derivative liabilities of $6.0 at fair value on our consolidated balance sheet in relation to our cash flow hedges, with a corresponding balance of $0.2 recorded in the opening accumulated other comprehensive loss. In addition, we reclassified $0.3 of net deferred foreign exchange losses to opening accumulated other comprehensive loss. The ineffective portion of cash flow hedges as of December 31, 2006 was insignificant and, therefore, did not impact the opening deficit.

(ii)      Fair value hedges:

In connection with the issuance of our $500.0 Senior Subordinated Notes (2011 Notes) in June 2004, we entered into agreements to swap the fixed interest rate for a variable interest rate. We have designated the swap agreements as fair value hedges. As at January 1, 2007, we recorded a derivative liability of $7.9 (net of an interest accrual of $2.0) for the swap agreements in other long-term liabilities. A corresponding fair value adjustment was not recorded against the 2011 Notes since the prior hedge relationship was not considered a

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qualified type under Section 3865 after bifurcation of the embedded prepayment option in accordance with Section 3855. We decreased the deferred income tax liability by $2.6 and recorded a loss of $5.3 to opening deficit. A new hedge relationship was redesignated on January 1, 2007 which qualified for fair value hedge accounting in accordance with Section 3865.

(iii)  Embedded derivatives:

The prepayment options embedded in our Senior Subordinated Notes qualify as embedded derivatives which must be bifurcated for reporting in accordance with the new standards. As at January 1, 2007, we bifurcated the fair value of the embedded derivative asset of $9.3 from the Notes. As a result of recording this asset, the amortized cost of long-term debt increased. We also recorded a cumulative adjustment of $1.9 against the opening deficit. Any subsequent change in the fair value of the embedded derivatives will be recorded in operations.

(iv)    Effective interest method:

We incurred underwriting commissions and expenses relating to our Senior Subordinated Notes offerings. Previously, these costs were deferred in other assets and amortized on a straight-line basis over the term of the debt. The new standards require us to reclassify these costs as a reduction of the cost of the debt and to use the effective interest rate method to amortize the costs to operations. As at January 1, 2007, we reclassified $10.3 of unamortized costs from other assets to long-term debt and recorded an adjustment to reflect the balance had we used the effective interest rate method since inception. This resulted in a $1.2 increase in the unamortized costs, a decrease of $0.8 in opening deficit and an increase of $0.4 in deferred income tax liability.

(b)       Accounting changes:

In January 2007, we adopted CICA Handbook Section 1506, “Accounting changes,” which requires that voluntary changes in accounting policy are made only if the changes result in financial statements that provide more reliable and more relevant information. It also requires prior period errors to be corrected retrospectively. The adoption of this standard did not impact our consolidated financial statements.

Recently issued accounting pronouncements:

(i)          Inventories:

In June 2007, the CICA issued Section 3031, “Inventories,” which requires inventory to be measured at the lower of cost and net realizable value. The standard also provides guidance on the costs that can be capitalized. In addition, previous inventory write-downs must be reversed if the economic circumstances have changed to support an increased inventory value. The standard is effective for 2008. We are currently evaluating the impact of adopting this standard on our consolidated financial statements.

(ii)      Financial Instruments - Disclosure and Presentation:

In December 2006, the CICA issued Section 3862, “Financial Instruments, Disclosures,” and Section 3863, “Financial Instruments, Presentation.”  These standards provide additional guidance on disclosing risks related to recognized and unrecognized financial instruments and how those risks are managed. These standards are effective for 2008. We are currently evaluating the impact of adopting these standards on our consolidated financial statements.

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2.              Restatement:

Deferred income tax recovery

The consolidated financial statements for the three and six months ended June 30, 2007 have been restated with respect to the accounting for certain deferred income tax benefits.

We have determined that the assumptions used in the second quarter to record a non-cash, deferred income tax recovery relating to a tax benefit resulting from a previous year’s write-down of an acquired and subsequently restructured Canadian operation were incorrect. An error in the cost basis for tax purposes of this Canadian acquisition led to the incorrect presumption that a tax benefit could be realized in the second quarter of 2007. Accordingly, we had overstated our deferred income tax recovery, net earnings and earnings per share for the three and six months ended June 30, 2007.

The effect of the restatement on the consolidated financial statements is as follows:

We have restated our consolidated financial statements to reflect the correction of an error in accordance with CICA Section 1506, “Accounting changes.”

3.              Acquisitions and divestitures:

As part of the acquisition of Manufacturers’ Services Limited (MSL) in 2004, we recorded liabilities for consolidating some of the acquired MSL sites. We have completed the major components of these restructuring plans except for certain long-term lease and contractual obligations which will be paid out over the remaining lease terms through 2010. Cash outlays are funded from cash on hand. We record the restructuring liability in accrued liabilities.

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Details of the 2007 activity through the MSL restructuring liability are as follows:

2006 acquisition activity:

In March 2006, we acquired certain assets located in the Philippines from Powerwave Technologies, Inc. for a cash purchase price of $19.1. Amortizable intangible assets arising from this acquisition were $7.6, primarily for customer relationships and contract intangibles.

2006 divestiture:

In June 2006, we sold our plastics business for net cash proceeds of $18.5. Our plastics business was located primarily in Asia. During the second quarter of 2006, we reported a loss on sale of $33.2 which we recorded as other charges. This loss included $20.0 in goodwill allocated to the plastics business. As part of the sale agreement, we provided routine indemnities to the purchaser which management believes will not have a material adverse impact on our results of operations, financial position or liquidity.

4.              Long-term debt:

(a)          In April 2007, we renegotiated the terms of our revolving credit facility and reduced the amount available from $600.0 to $300.0. We also extended the maturity from June 2007 to April 2009. Under the terms of the extension, we have pledged certain assets, including the shares of certain North American subsidiaries, as security.

The facility includes a $25.0 swing-line facility that provides for short-term borrowings up to a maximum of seven days. Borrowings under the facility bear interest at LIBOR plus a margin, except that borrowings under the swing-line facility bear interest at a base rate plus a margin. There were no borrowings outstanding under this facility. Commitment fees for the second quarter of 2007 were $0.7 ($1.5 – first half of 2007).

The facility has restrictive covenants relating to debt incurrence and sale of assets and also contains financial covenants that require us to maintain certain financial ratios. We were in compliance with all covenants at June

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30, 2007. Based on the required financial ratios at June 30, 2007, we have approximately $280 of available debt incurrence.

We also have uncommitted bank overdraft facilities available for operating requirements which total $47.5 at June 30, 2007. There were no borrowings outstanding under these facilities.

(b)         In June 2004, we issued Senior Subordinated Notes due 2011 with an aggregate principal amount of $500.0 and a fixed interest rate of 7.875%. We incurred $12.0 in underwriting commissions and expenses which we deferred and are amortizing over the term of the debt using the effective interest rate method. The 2011 Notes are unsecured and are subordinated in right of payment to all our senior debt. We may redeem the 2011 Notes on July 1, 2008 or later at various premiums above face value.

In connection with the 2011 Notes offering, we entered into agreements to swap the fixed interest rate with a variable interest rate based on LIBOR plus a margin. The average interest rate on the 2011 Notes was 8.4% for the second quarter and first half of 2007 (8.0% – second quarter of 2006; 7.8% for the first half of 2006).

(c)          In June 2005, we issued Senior Subordinated Notes due 2013 with an aggregate principal amount of $250.0 and a fixed interest rate of 7.625%. We incurred $4.2 in underwriting commissions and expenses which we deferred and are amortizing over the term of the debt using the effective interest rate method. The 2013 Notes are unsecured and are subordinated in right of payment to all our senior debt. We may redeem the 2013 Notes on July 1, 2009 or later at various premiums above face value.

(d)         The prepayment options in the Notes qualify as embedded derivatives which must be bifurcated for reporting under the new standards. As of June 30, 2007, the fair value of the embedded derivative asset is $2.7 and is recorded with long-term debt. The decrease in the fair value of $2.9 for the first half of 2007 is recorded in interest expense on long-term debt. As a result of bifurcating the prepayment option from the Notes, a basis adjustment is added to the amortized cost of the long-term debt. This basis adjustment is amortized over the term of the debt using the effective interest rate method. This, combined with the change in the fair value of the debt obligation attributable to movement in the benchmark interest rates, resulted in a gain of $6.1 for the first half of 2007, which reduces interest expense on long-term debt.

5.              Other charges: