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Exhibit 21.1

Subsidiaries of the Registrant*

Celestica Cayman Holdings 1 Limited, a Cayman Islands corporation

Celestica LLC, a Delaware, U.S. limited liability company

Celestica (Thailand) Limited, a Thailand corporation

Celestica (USA) Inc., a Delaware, U.S. corporation

Celestica Holdings Pte Limited, a Singapore corporation

* Subsidiaries that, in aggregate, would not be a “significant subsidiary” as defined in Rule 1-02(w) of Regulation S-X, have been omitted.