A pneumatic tire includes a tread portion provided with a pair of center main grooves and a pair of shoulder main grooves to define a center portion, a pair of middle portions, and a pair of shoulder portions. The shoulder main grooves extend in a trapezoid wave manner that includes a circumferentially extending axially outer part, an axially inner part arranged axially inwardly of the axially outer part, and an inclined part connecting between the axially outer and inner parts. The shoulder portion is provided with shoulder lateral grooves extending from the shoulder main groove to a tread edge to define a plurality of shoulder blocks. Each shoulder lateral groove has its axially inner end connected to the axially outer part of the shoulder main groove so as to include an outer corner point between the axially outer part and the inclined part.