Oleksandr Oleksandrovych Fedenko (Ukrainian: Олександр Олександрович Феденко; born 20 December 1970) is a Ukrainian retired cyclist. He competed in four road and track events at the 1996 and 2000 Summer Olympics and won a silver medal in the 4000 m team pursuit in 2000. In this discipline his team finished in seventh place at the 1996 Games and won two world titles in 1998 and 2001.

In road racing, he won the Tour de Serbie in 1995. The first coach for Olympics was Oleksandr Kulyk, which fell in battle in 2022 during the Russian invasion of Ukraine.