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 (Nos. 333-111478, 333-82910, 333-128371, and 333-119406) and Form S-8 (Nos. 333-69441, 333-37276, 333-37278, 333-103433, 333-103435, and 333-69445) of Kulicke and Soffa Industries, Inc. of our report dated December 13, 2005 relating to the financial statements, financial statement schedule, management’s assessment of the effectiveness of internal control over financial reporting and the effectiveness of internal control over financial reporting, which appears in this Form 10-K.

PricewaterhouseCoopers LLP

Philadelphia, Pennsylvania

December 13, 2005