A pneumatic tire 1 is provided in a tread portion 2 with a circumferential land region 6 provided with transverse sipes 15 extending across the entire width of the circumferential land region. Each of the transverse sipes 15 comprises an arc-shaped first portion 18 convexed toward one side in the tire circumferential direction and an arc-shaped second portion 19 convexed toward the other side in the tire circumferential direction and connected with the first portion 18 so as to have a wavy configuration. The transverse sipes 15 include a first transverse sipe 16 of which first portion 18 is deeper than the second portion 19 thereof, and a second transverse sipe 17 of which second portion 19 is deeper than the first portion 18 thereof.