Messmer is a surname, and may refer to:

• Magali Messmer, a Swiss athlete
• Otto Messmer, an American animator
• Otto Messmer (Jesuit), head of Jesuits in the CIS
• Pierre Messmer, a French politician
• Wayne Messmer, an announcer for the Chicago Cubs
• Sebastian Gebhard Messmer, an archbishop of Milwaukee

This page or section lists people with the surname Messmer. If an internal link intending to refer to a specific person led you to this page, you may wish to change that link by adding the person's given name(s) to the link.