Thomas Friedensen (1879 – 1931) was an English-born artist, active in Australia.
Friedensen was born at Leeds, England. He studied at the Royal College of Art, South Kensington, and in 1912 had an exhibit in the black and white room at the Royal Academy. Friedensen showed a water-colour and two oils at the 1919, 1920 and 1921 exhibitions. He arrived in Australia in 1921 and was elected an associate of the Royal Art Society of New South Wales in 1922. Friedensen established a reputation as an etcher and is represented in the Sydney, Melbourne, Adelaide and Perth galleries. Friedensen returned to Europe in 1930 and died at Cannes in the south of France in beginning of June 1931.