Alexei Andreyevich Kolosov (, ; born 4 January 2002) is a Belarusian professional ice hockey goaltender who currently plays for Dinamo Minsk in the Kontinental Hockey League (KHL). Internationally he has played for the Belarusian national team at the 2021 World Championship. One of the top ranked goaltenders for the 2021 NHL Entry Draft, Kolosov was selected 78th overall by the Philadelphia Flyers.