Mathias Krathmann Gehrt (born 7 June 1992) is a retired Danish professional footballer who played as a midfielder.

Born in Copenhagen, Mathias Gehrt was a Brøndby IF youth graduate, and made his debut with the first team on 6 March 2011, coming on as a 64th-minute substitute for Ousman Jallow in a 1–1 home draw against Lyngby.

Gehrt scored his first senior goal against Silkeborg on 3 April, netting the first of a 2–2 home draw.

[3] A few weeks later, he signed with Danish 1st Division side FC Helsingør on a deal for the rest of 2016, after a successful tryout.

[6] After five season in Nykøbing, Gehrt signed with newly promoted Danish Superliga club Hvidovre IF in June 2023.