A pneumatic tire having a tread portion including land portions formed by vertical grooves provided in a tire circumferential direction and lateral grooves provided so as to intersect with the vertical grooves, the lateral grooves being disposed in the tire circumferential direction having a plurality of pitches P1, P2, and P3, wherein in a shoulder region of the tread portion, as a pitch decreases a volume ratio of the lateral grooves with respect to a pitch volume thereof increases; and, in a center region of the tread portion, as a pitch decreases the volume ratio of the lateral grooves with respect to a pitch volume thereof decreases.