Exhibit 99.3

VOTING INSTRUCTION FORM CELESTICA INC. SEE VOTING INSTRUCTION NO. 2 ON REVERSE INTERNET VOTE: WWW.PROXYVOTE.COM TELEPHONE VOTE: 1-800-454-8683 MEETING TYPE: ANNUAL MEETING MEETING DATE: THURSDAY, APRIL 22, 2010 AT 10:00 A.M. EDT RECORD DATE: FOR HOLDERS AS OF MARCH 12, 2010 PROXY DEPOSIT DATE: APRIL 20, 2010 15101Q108 1 1-0001 WE NEED TO RECEIVE YOUR VOTING INSTRUCTIONS AT LEAST ONE BUSINESS DAY BEFORE THE PROXY DEPOSIT DATE. CELESTICA INC. ANNUAL MEETING TO BE HELD 04/22/10 AT 10:00 A.M. EDT FOR HOLDERS AS OF 03/12/10 ELECTION OF DIRECTORS (FILL IN ONLY ONE BOX " I1" PER NOMINEE IN BLUE OR BLACK INK) VOTING RECOMMENDATION: FOR ALL THE NOMINEES PROPOSED AS DIRECTORS FOR WTHHOLD 01-ROBERT L. CRANDALL 02-WILLIAM A. ETHERINGTON 03-LAURETTE KOELLNER 04-CRAIG H. MUHLHAUSER 05-EAMON J. RYAN 06-GERALD W. SCHWARTZ 07-DON TAPSCOTT ITEM(S) 2 - APPOINTMENT OF KPMG LLP AS AUDITOR AND AUTHORIZATION OF THE BOARD OF DIRECTORS OF CELESTICA INC. TO FIX THE REMUNERATION OF THE AUDITOR. *NOTE* THIS FORM CONFERS DISCRETIONARY AUTHORITY TO VOTE ON SUCH OTHER BUSINESS AS MAY PROPERLY COME BEFORE THE MEETING OR ANY ADJOURNMENT THEREOF. *NOTE* THIS VOTING INSTRUCTION FORM SHOULD BE READ IN CONJUNCTION WITH THE ACCOMPANYING INFORMATION CIRCULAR. (FILL IN ONLY ONE BOX " " PER ITEM IN BLUE OR BLACK INK) FOR WITHHOLD A/C *** ISSUER COPY *** FILL IN THE BOX " " TO THE RIGHT IF YOU PLAN TO ATTEND AND VOTE YOUR SHARES AT THE MEETING Broadridge TM 51 MERCEDES WAY EDGEWOOD NY 11717 UNDER SECURITIES REGULATIONS, SECURITYHOLDERS MAY ELECT ANNUALLY TO AQ RECEIVE THE ANNUAL,INTERIM FINANCIAL STATEMENTS OR BOTH INCLUDING RELEVANT MD&A BY MAIL. INDICATE YOUR PREFERENCE IN THE APPROPRIATE BOX(S) PROVIDED. TELEPHONE VOTE AT 1-800-454-8683 INTERNET VOTE AT WWW. PROXY VOTE. COM VOTING RECOMMENDATIONS ITEM(S) FOR 0010200 2 * * NONE ANNUAL INTERIM CELESTICA INC. 844 DON MILLS ROAD TORONTO, ON M3C 1V7 CANADA * ISSUER CONFIRMATION COPY - INFO ONLY * I I SIGNATURE(S) DATE