Janus Mats Drachmann (born 11 May 1988) is a Danish professional footballer who plays as a midfielder for Danish Superliga side AC Horsens.
Born in Frederikssund, Drachmann emerged from the AC Horsens academy in 2006, and grew into a key player in midfield for the club, as well as the team captain. He since played for SønderjyskE and Midtjylland, before signing with OB in 2018.
Drachmann is a youth international for Denmark, having gained caps for the under-20 and under-21 sides.