Thomas Christian Weller (born 4 November 1980) is a German former professional footballer who plays as a left midfielder or left-back for FC Romanshorn.
Weller joined FC St. Gallen on 24 October 2007.
He moved to SC Brühl in 2014 to FC United Zürich in 2015, and to FC Kosova Zürich in 2017. He continued his career in the Swiss lower leagues with FC Uster and FC Romanshorn.
His father Hanjo Weller previously worked as Head Scout by FC Vaduz.