Karl Tarvas, Estonian architect (d. 1975)
Karl Tarvas (until 1940 Karl Treumann; 19 April 1885 in Tallinn – 26 December 1975 in Tallinn) was an Estonian architect. Karl Tarvas graduated as an architect from Riga Polytechnic Institute in 1915.

During World War I he worked on building shore batteries, and from 1919 to 1923 he became director of shore battery construction. From 1923 to 1926 he worked as an architect in Harju County, Estonia, and proceeded to work as a freelance architect in an independent office until 1940.

He designed many buildings in the suburbs of Tallinn, particularly two-story houses with stone stairwells, and stone apartment buildings. He also designed Viinistu Elementary School and the church on the island of Naissaar.

In 1921 15 architects, including Karl Tarvas, founded the Association of Estonian Architects.