Thomas Søndergård (born 4 October 1969, Holstebro, Denmark) is a Danish conductor. He is currently the Principal Conductor of BBC National Orchestra of Wales and Principal Guest Conductor of Royal Scottish National Orchestra.
Søndergård studied percussion and timpani at the Royal Danish Academy of Music from 1989 to 1992, where his teachers included Gert Mortensen. From 1989 to 1992, Søndergård was a timpanist in the European Union Youth Orchestra. He joined the Royal Danish Orchestra as a timpanist in 1992. He served on the faculty of the Royal Danish Academy of Music from 2001 to 2002.
Søndergård devoted greater attention to conducting from age 27. His conducting mentors have included Alexander Polianichko, Yves Abel and Graham Bond. His conducting work in contemporary music has included conducting the 2005 premiere of Poul Ruders' Kafka's Trial with the Royal Danish Opera, in performances which were recorded for commercial release. Søndergård became principal conductor of the Norwegian Radio Orchestra (KORK) in 2009, and concluded his KORK tenure after the 2011-2012 season.