Peel Regional Police say gunfire erupted around 2 a.m. ET outside the bar near Tomken Road and Derry Road East.
Const. Thomas Ruttan said investigators are looking for two black male suspects.
"It appears they left the scene, or fled the scene, in a black vehicle," Ruttan said.
The victim is in stable condition.
Police are asking any witnesses to come forward.
Suggest a correction