Colin Kelly (born December 29, 1989) is a professional gridiron football offensive tackle who is a free agent.

He has also been a member of the San Francisco 49ers, Chicago Bears and Jacksonville Jaguars in the National Football League (NFL), the Ottawa Redblacks and Edmonton Elks in the CFL, and the Seattle Sea Dragons of the XFL.

Kelly signed with the Kansas City Chiefs as an undrafted free agent following the 2013 NFL draft.

Kelly spent the entire 2013 NFL season on the Chiefs injured reserve list following a knee injury he suffered in July 2013.

[14] On June 26, 2022, Kelly was traded to the Hamilton Tiger-Cats in exchange for a seventh-round pick in the 2023 CFL Draft.

[15] In February 2023, the CFL handed Kelly a two-game suspension for violating the league's drug policy.