Thomas Vermaelen (born 14 November 1985) is a Belgian footballer who plays for Premier League club Arsenal and the Belgium national football team. Being left-footed, he usually plays as a left-sided centre back and can play at left-back as well.

He is currently the vice-captain of Arsenal, with Robin van Persie his best friend named captain. His key attributes include aerial ability and he is quick with the ball at his feet.