To provide a pneumatic tire for a motorcycle achieving both wear resistance and steering stability of a tire at inclined traveling by improving a tread pattern.

The pneumatic tire for the motorcycle includes: the tread part 11; a pair of sidewall parts 12 extending to both sides; and a pair of bead parts 13 extending to the sidewall parts. The tread pattern having a plurality of crossing grooves 1-9 is provided on a tire road surface. When a point at 1/4 of a tread width from a tire center part C is made a tire middle part M, the crossing groove arranged across the tire middle part M among the crossing grooves is formed to have different groove depths in the tire width direction, and to be the deepest in the tire middle part. A part of the crossing groove has a disconnected part 10 in a way from the tire center part C to the one side tread end TE.