Exhibit 32.1

Section 1350 Certifications

Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

(Subsections (a) and (b) of Section 1350, Chapter 63 of Title 18, United States Code)

Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (Subsections (a) and (b) of Section 1350, Chapter 63 of Title 18, United States Code), each of the undersigned officers of Allegion plc (the Company), does hereby certify that:

The Quarterly Report on Form 10-Q for the three and six months ended June 30, 2024 (the Form 10-Q) of the Company fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 and information contained in the Form 10-Q fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ John H. Stone

John H. Stone

Principal Executive Officer

July 24, 2024

/s/ Michael J. Wagnes

Michael J. Wagnes

Principal Financial Officer

July 24, 2024