Colby Joseph Armstrong (born November 23, 1982) is a Canadian former professional ice hockey player who played in the National Hockey League (NHL) for the Pittsburgh Penguins, Atlanta Thrashers, Toronto Maple Leafs and Montreal Canadiens in a 9-year career. He currently serves as an NHL analyst for Sportsnet. Armstrong's younger brother, Riley briefly played in the NHL, with the San Jose Sharks.
Armstrong was born in Lloydminster, Saskatchewan. In the off-season, he lives in the village of Clavet, located southeast of Saskatoon. As a child, he was a figure-skater. He later played hockey with the Saskatoon Red Wings and the Saskatoon Blazers. Like Los Angeles Kings forward Jarret Stoll, Philadelphia Flyers brothers Brayden and Luke Schenn, and Eric Gryba of the Edmonton Oilers, he attended St. Joseph High School in Saskatoon.
Armstrong was drafted by the Pittsburgh Penguins in the first round of the 2001 NHL Entry Draft as the 21st pick overall.