QuickLinks -- Click here to rapidly navigate through this document

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 March 2009

---

CELESTICA INC.
(Translation of registrant's name into English)

---

1150 Eglinton Avenue East
Toronto, Ontario
Canada, M3C 1H7
(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.

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

        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 March 2009

        The following information filed with this Form 6-K shall not be deemed to be incorporated by reference into any of Celestica's registration statements on Forms S-8 (Nos. 333-9500, 333-9822, 333-9780, 333-71126, 333-66276, 333-63112, 333-88210, 333-113591) and on Form F-3 (No. 333-155390), or the prospectuses included therein, or any registration statement subsequently filed by Celestica with the Securities and Exchange Commission, except as provided for herein or as shall be expressly set forth by specific reference in such filing:

•

Notice of the Annual Meeting of Shareholders and Management Information Circular and Proxy Statement, the text of which is attached hereto as Exhibit 99.1;



•

Multiple Voting Shares Proxy and Subordinate Voting Shares Proxy for use at the Annual Meeting of Shareholders, the text of which is attached hereto as Exhibit 99.2;



•

Request card to beneficial holders not served by ADP for use at the Annual Meeting of Shareholders, the text of which is attached hereto as Exhibit 99.3;



•

Letter from Computershare with on line voting instructions, the text of which is attached hereto as Exhibit 99.4;



•

Chief Executive Officer's Letter to Shareholders, the text of which is attached hereto as Exhibit 99.5; and



•

Press Release, dated March 24, 2009, the text of which is attached hereto as Exhibit 99.6.  

---

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.

---

EXHIBIT INDEX

---

QuickLinks

SIGNATURES
EXHIBIT INDEX