Exhibit 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We hereby consent to the incorporation by reference in the Registration Statements on Form S-3 (No. 333-258255) and on Form S-8 (Nos. 333-234291 and 333-197667) of Graphic Packaging Holding Company of our report dated February 21, 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

Atlanta, Georgia

February 21, 2024