Canister arrangement structure of motorcycle

A motorcycle (1) is provided with an engine (E), a fuel tank (5) that stores fuel to be supplied to the engine (E), and a canister (54) that adsorbs fuel gas generated in the fuel tank (5). In a canister arrangement structure of the motorcycle, the fuel tank (5) is provided with a discharge port (532), from which the fuel gas generated in the fuel tank (5) is discharged outside of the fuel tank, in an upper surface on one side in a longitudinal direction of a motorcycle, and the canister (54) is arranged on the fuel tank at a portion on another side in the motorcycle longitudinal direction with respect to the discharge port (532) formed on one side thereof.