Exhibit 31.2

Certification of Principal Financial Officer Pursuant to

Section 302 of the Sarbanes-Oxley Act of 2002

I, Theodora Mistras, certify that:

1. I have reviewed this Form 10-K/A of Viatris Inc.; and

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report.

/s/ Theodora Mistras

Theodora Mistras

Chief Financial Officer

(Principal Financial Officer)

Date: April 26, 2024