Valdeko Ratassepp (September 3, 1912 Ropka – February 10, 1977 Tallinn) was an Estonian actor.

In 1932 he graduated from Hugo Treffner Gymnasium, from 1932 to 1937 (he graduated) he studied at the Faculty of Law of the University of Tartu, a member of the EÜS Association. From 1932, he worked at the Vanemuine theater. 1939–1940 assistant to attorney-at-law Sergei Pauli in Tallinn. In 1940, he worked as the secretary of the Harju County Executive Committee. During the Second World War, Estonia was a member of the National Art Ensembles of the USSR. From 1944 until the end of his life, he worked as an actor at the Tallinn State Academic Drama Theater.