To provide a pneumatic tire securing water splash restraining effect of a fin even after wear of the tire has progressed.

The pneumatic tire 1 includes the fin 6 for restraining water splash disposed to a buttress part. The fin 6 is extended along a whole circumference of the buttress part, and is installed by being fitted in a fitting part 7 formed to the buttress part. A plurality of stages of fitting parts 7 are disposed at positions different from each other in a tire radial direction. The fin 6 is constituted of a circumferentially continuous annular member, and has a diameter which accords with one of the plurality of stages of fitting parts 7.