Tammen is a surname of German origin. Notable people with the surname include:
Bruce Tammen (born 1950), American choir director, conductor, and singer Harry Heye Tammen (1856–1924), American businessman and newspaper publisher John Tammen (born 1962), American Navy rear admiral Ronald Tammen (born 1933, went missing 1953), American missing person
See also
Sietje Gravendaal-Tammens