A pneumatic tire includes a lug grooves extending in a shoulder region of a tread portion in a width direction up to a sidewall portion, a shoulder block and a side block defined by the lug grooves, in which the side block located outward of the shoulder block in the width direction is ridged higher than the shoulder block, at least a part of the lug grooves being each a closed lug groove closed by a ridge portion provided therein, the ridge portion being continuous to the side block located on both sides of the closed lug groove in the circumferential direction, the ridge portion including a first narrow groove with a smaller groove width and a smaller groove depth than the lug groove, extending in the width direction, and at least one end of the first narrow groove penetrating toward the closed lug groove or the sidewall portion.