Sergei Lvovich Nemchinov (Russian: Серге́й Львович Немчинов; born 14 January 1964) is a Russian former professional ice hockey player who played in the National Hockey League (NHL) for the New York Rangers, Vancouver Canucks, New York Islanders and the New Jersey Devils for twelve seasons, bookended by ten seasons in the Soviet Championship League with PHC Krylya Sovetov and HC CSKA Moscow, and two in the Russian Superleague with Lokomotiv Yaroslavl.

He went on to play in 761 regular season games in his NHL career, scoring 152 goals and 193 assists for 345 points, picking up 251 penalty minutes.

In 1994, Nemchinov, along with Alexander Karpovtsev, Alexei Kovalev, and Sergei Zubov were the first Russians to have their names engraved on the Stanley Cup.

In 2019 he joined the South Korean men's national ice hockey team as an assistant coach.

[5] Then he entered the coaching staff of the national team of Turkmenistan and has already drawn up a plan for preparing Turkmen hockey players for the 2020 IIHF World Championship Division III.