The invention provdies a pneumatic tire which can improve rocky stretch road running performance. A pneumatic tire 1 is provided in which a shoulder block 3 in which a first shoulder block 6 and a second shoulder block 7 are alternately arranged, is formed. The first shoulder block 6 has in its tread 6a, a first edge 8 on the tire axial-direction outer side. The second shoulder block 7 has a second edge 9 positioned on the tire axial-direction outer side of a tread 7a of the second shoulder block 7 and positioned on the tire axial-direction inner side than the first edge 8. The first shoulderblock 6 includes a first lug groove 11 extending to the tire axial-direction inner from the first edge 8 and terminating in the inside of the block.