| Position1: | Quarterback |
| Position2: | Defensive back |
| Position3: | Wide receiver |
| Birth Date: | 23 June 1945 |
| College: | Southern Illinois |
| Amateur Title: | Jrs. |
| Amateur Team: | NDG Maple Leafs |
| Height Ft: | 6 |
| Height In: | 2 |
| Weight Lbs: | 200 |
| Playing Team1: | Montreal Alouettes |
| Playing Years2: | – |
| Playing Team2: | Ottawa Rough Riders |
| Playing Team3: | Calgary Stampeders |
| Playing Years4: | – |
| Playing Team4: | Montreal Alouettes |
Barclay Allen (born June 23, 1945) is a former Canadian football quarterback and defensive back who played in the Canadian Football League from 1970 to 1974. He played college football for the Southern Illinois Salukis.[1] In 1969, Allen was the Salukis' starting quarterback.[2] He signed with the Montreal Alouettes the following year and later played for the Ottawa Rough Riders and Calgary Stampeders over a total of 49 games.[1] Although his original position was as quarterback, Allen saw little time in that role, throwing only two passes during his CFL career.[3] Instead, he spent most of his time as a defensive halfback, making five interceptions over his career, including a pick six.[1]