Colby Joseph Armstrong (born November 23, 1982) is a Canadian professional ice hockey player currently playing for the Toronto Maple Leafs.
Armstrong grew up in Saskatoon, Saskatchewan in the city's northeastern neighborhood of Erindale, where he continues to live in the off-season. He played youth hockey with the Saskatoon Red Wings and the Saskatoon Blazers. Additionally, as a child he was a figure-skater. He, along with Los Angeles Kings forwards Jarret Stoll and Brayden Schenn and Toronto Maple Leafs teammate Luke Schenn, 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.