Sergei Zholtok (Russian: Сергей Жолток), also known as Sergejs Žoltoks (December 2, 1972 – November 3, 2004) was a Latvian professional ice hockey centre.

He played ten seasons in the National Hockey League (NHL) for the Boston Bruins, Ottawa Senators, Montreal Canadiens, Edmonton Oilers, Minnesota Wild and Nashville Predators from 1993 to 2004.

Prior to being drafted, he won a gold medal with USSR national team in IIHF Junior World Championships in 1992.

During the 2004–05 NHL lockout, Žoltoks returned to Latvia and played for Riga 2000 team of the Latvian Hockey Higher League and the Belarusian Extraleague.

Žoltoks left the game with five minutes remaining, collapsing and dying after returning to the dressing room in the arms of teammate Darby Hendrickson.