Maryna Ihorivna Tkachenko, also spelled Marina, (Ukrainian: Марина Ігорівна Ткаченко, born 29 August 1965 in Mukachevo) is a Ukrainian basketball player. She won the gold medal at the 1992 Summer Olympics, with the Unified Team of twelve former Soviet Republics, and a fourth place at the 1996 Summer Olympics with the Ukrainian national team.