Exhibit 23

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We hereby consent to the incorporation by reference in the Registration Statements on Form S-3 (No. 333-124747) and Form S-8 (No. 333-160202, No. 333-160203, No. 333-166354, No. 333-104158, No. 333-104159, No. 333-01225, No. 333-36099, No. 333-36163, No. 333-57223, No. 333-83745, No. 333-83747, No. 333-46472, No. 333-46476, No. 333-46626, No. 333-67944, No. 333-67946, No. 333-90060, No. 333-90062, No. 333-85196 and 333-188292) of Hexcel Corporation of our report dated February 5, 2014 relating to the consolidated financial statements, financial statement schedule and the effectiveness of internal control over financial reporting, which appears in this Form 10-K.

/s/ PricewaterhouseCoopers LLP

PricewaterhouseCoopers LLP

Stamford, Connecticut

February 5, 2014

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