Thomas Zeuthen Kahlenberg (; born 20 March 1983) is a Danish former footballer who played as an attacking midfielder. He started his career with Brøndby IF, winning two Danish Superliga championship, and played four seasons at French club Auxerre. He has played 46 games and scored five goals for the Denmark national team, and represented Denmark at the 2004 European Championship, 2010 FIFA World Cup and 2012 European Championship. He was named 2004 Danish under-21 "Player of the Year".