Rudi Gfaller (10 November 1882 – 11 February 1972) was an Austrian operetta composer and singer. Born in Vienna, he began his career as an actor and singer and appeared in various provincial theatres in Germany. In 1906, he composed the first of his twelve operettas. Gfaller was married to the operetta singer Therese Wiet and often appeared with her in Leipzig where the couple were based for most of their careers. In 1943 he retired to their house in Bad Ischl where he died at the age of 89.