A pneumatic tire comprising: a tread portion provided with a plurality of oblique main grooves extending obliquely from tread edges (Te) toward the tire equator (C) so as to define oblique land regions between the oblique main grooves adjacent in the tire circumferential direction, the oblique land regions each divided by a first vertical groove connecting between the adjacent oblique main grooves into a shoulder block located axially outside the first vertical groove and a middle block located axially inside the first vertical groove , wherein said shoulder block is provided with a plurality of transverse sipes whose angles (θ1) with respect to the tire axial direction are less than 45 degrees, and no other sipes are provided within the shoulder block , said middle block is provided with a plurality of vertical sipes whose angles (θ2) with respect to the tire circumferential direction are less than 45 degrees, and no other sipes are provided within the middle block , each of the oblique land regions is provided with a second vertical groove connecting between the adjacent oblique main grooves and positioned between the first vertical groove and the tire equator (C) so as to define a crown block on the axially inside of the second vertical groove , and said crown block comprises an axially inner portion having a transverse edge extending substantially in the tire axial direction, and a pair of oblique edges extending from both ends of the transverse edge obliquely so that the axial width between the oblique edges gradually increases toward one side in the tire circumferential direction. a tread portion provided with a plurality of oblique main grooves extending obliquely from tread edges (Te) toward the tire equator (C) so as to define oblique land regions between the oblique main grooves adjacent in the tire circumferential direction, the oblique land regions each divided by a first vertical groove connecting between the adjacent oblique main grooves into a shoulder block located axially outside the first vertical groove and a middle block located axially inside the first vertical groove , wherein said shoulder block is provided with a plurality of transverse sipes whose angles (θ1) with respect to the tire axial direction are less than 45 degrees, and no other sipes are provided within the shoulder block , said middle block is provided with a plurality of vertical sipes whose angles (θ2) with respect to the tire circumferential direction are less than 45 degrees, and no other sipes are provided within the middle block , each of the oblique land regions is provided with a second vertical groove connecting between the adjacent oblique main grooves and positioned between the first vertical groove and the tire equator (C) so as to define a crown block on the axially inside of the second vertical groove , and said crown block comprises an axially inner portion having a transverse edge extending substantially in the tire axial direction, and a pair of oblique edges extending from both ends of the transverse edge obliquely so that the axial width between the oblique edges gradually increases toward one side in the tire circumferential direction. <EOS>