Tomas Birger von Brömssen (born 8 May 1943, Örgryte, Västra Götalands län, Sweden) is a Swedish actor.
He played leading roles in Albert & Herbert, My Life as a Dog (Swedish: Mitt liv som hund), Dykaren (English title Baltic Sea, Salvation or The Diver), Mannen från Mallorca (English title The Man from Majorca) and Sofies verden (English title Sophie's World).
He was first married to Eva von Brömssen from 1966 to 2000. He remarried on 21 November 2004 to actress Dorthe Pedersen, with whom he currently resides in Frölunda, outside Gothenburg.
Povel Ramel awarded him the Karamelodiktstipendiet prize for Best Male TV Personality in 1986.