PNEUMATIC TIRE AND TIRE MOLD

Provided is a pneumatic tire (10) having a tread (20) including a block (30) in which a sipe (40) is formed. At least one wall surface (41) of the sipe (40) is formed in a waveform including a plurality of curved portions (42) when viewed from a tire radial direction (Z). The curved portions (42) include an inwardly curved portion (42A) that bulges toward the inside of the sipe (40) and an outwardly curved portion (42B) that bulges toward the outside of the sipe (40). The radii of curvature of the inwardly curved portion (42A) and the outwardly curved portion (42B) differ from each other.