Kostiantyn Petrovich Stepankov (, by name of Kostiantyn Petrovich Voloshchuk; 3 June 1928 – 22 July 2004) was a Soviet and Ukrainian actor. He appeared in more than fifty films between 1958 and 1999. He was a member of the jury at the 11th Moscow International Film Festival.
Kostiantyn Stepankov was born in a village Pechesky, in western Ukraine's Khmelnytskyi Oblast, to the family of a priest. From 1950 to 1953 he studied at the Karpenko-Karyi Memorial Kyiv Institute of Theatrical Arts