Aleksei Viktorovich Kosolapov (; born 17 March 1971) is a Russian-Kazakhstani football coach and a former player. He works as an assistant coach with FC Sakhalin Yuzhno-Sakhalinsk.
Kosolapov made his debut for Russia on 6 October 1993 in a friendly against Saudi Arabia. He played for Russia in two more friendlies in 1994 and several 1998 FIFA World Cup qualifiers in 1997 (but not in the knockout qualification games against Italy). He scored his only international goal against Israel in a qualifier in June 1997.