EXHIBIT 23

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We hereby consent to the incorporation by reference in the Registration Statements on Form S-8 (Nos. 333-264596, 333-211250, 333-181092, and 333-129542) and Form S-3(No. 333-269836) of Johnson & Johnson of our report dated February 16, 2024 relating to the financial statements and the effectiveness of internal control over financial reporting, which appears in this Form 10-K.

/s/PricewaterhouseCoopers LLP

Florham Park, NJ

February 16, 2024