An intra-groove groove 310,330 is formed in circumferential groove 31,33 which is formed in a pneumatic tire 1, the intra-groove groove 310,330 is recessed farther inward in a tire radial direction TR than the circumferential groove 31,33. The intra-groove groove 310,330 includes a high-angle groove section 311,331 in which an angle θ1 formed between a straight line L1 and the intra-groove groove 310,330 is equal to or more than a predetermined angle, and a low-angle groove section 312,332 in which an angle θ2 formed between the straight line L1 and the intra-groove groove 310,330 is smaller than the predetermined angle. The high-angle groove section 311,331 is positioned closer to an intra-groove center line DCL than the low-angle groove section 312,332. A width W1 of the high-angle groove section 311, 331 is wider than a width W2 of the low-angle groove section 312, 332.