Provided is a pneumatic tire that is advantageous as an off-road tire, the tire having improved driving performance, wear resistance, and cut resistance on off-road surfaces. The pneumatic tire comprises a block pattern having a point-symmetrical structure. Narrow-width outer blocks (21a) and wide-width outer blocks (21b), outer ends of which have different positions with respect to the tire widthwise direction, are alternately disposed around the tire circumferential direction. From among side blocks (23) provided in a side region, large blocks (23a) having large projection areas are disposedto the outside of the narrow-width outer blocks (21a) with respect to the tire widthwise direction, and small blocks (23b) having small projection areas are disposed to the outside of the wide-widthoutside blocks (21b) with respect to the tire widthwise direction. Lateral grooves (12) and side grooves (13) are connected, with the widths of the side grooves (13) communicating with wide-width sections (12a), constituted by the lateral grooves (12) having wide widths at the positions of the outer blocks (21), decreasing inward in the tire radial direction, and the widths of side parts communicating with narrow-width sections (12b), constituted by the lateral grooves (12) having narrow widths at the positions of the outer blocks (21), increasing inward in the tire radial direction, yieldinga tapered shape such that the side blocks (23) decrease in block width toward the wide-width sections (12a) as distance inward in the tire radial direction increases.