Thomas Douglas was born in Lusaka, Zambia, in 1972.
He holds British, Swiss and German citizenship and grew up bilingual. (English and German)
After graduating from drama school at the University of Hamburg, he was engaged by the experimental Theater am Neumarkt in Zurich and two years later was invited by Stefan Bachmann and Lars Ole Walburg to join the ensemble of Theater Basel. 

His broad portfolio of over 80 theater and more than 70 film productions in diverse, contrasting roles, characters and projects of all genres testifies to his desire to commit himself neither to one theme nor to a specific direction. 
His collaboration with Anna Sophie Mahler's experimental group CapriConnection has taken him on international tours from France to Germany and China.
In 2010, he won the Zurich Film Prize with the film "Zu Zweit - Together" by Barbara Kulcsar and his wife Anina La Roche. This also laid the foundation for his film career. In 2012, he starred alongside Klaus Maria Brandauer and Sebastian Koch in the thriller 'Manipulation' by Alex Martin. 
He also became internationally known to a wider audience with his performance as Ralph in the Netflix mini-series 'The Billion Dollar Code' by Robert Thalheim.
In 2022, Thomas took on an ongoing role as Principal Lexington in the internationally most successful series on Amazon Prime ever: "Maxton Hall". As well as one of the lead roles in the international feature film production "Sew Torn" by Freddy Macdonald: Beck.

Thomas Douglas lives in Zurich and Berlin.