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. 333-234808) and Form S-8 (Nos. 333-235278, 333-224838, 333-214408, and 333-188460) of Ducommun Incorporated of our report dated February 20, 2020 relating to the consolidated financial statements, consolidated financial statement schedule and the effectiveness of internal control over financial reporting, which appears in this Form 10-K.

/s/ PricewaterhouseCoopers LLP

Irvine, California

February 20, 2020