Mads Andersen may refer to:
Mads Andersen (chess player) (born 1995), Danish chess grandmaster Mads Andersen (poker player) (born 1970), Danish poker and backgammon player Mads Andersen (rower) (born 1978), Danish lightweight rower Mads Andersen (cyclist) (born 2000), Danish cyclist Mads Juel Andersen (born 1997), Danish footballer