A motorcycle tire for uneven terrain, comprising: a tread; a pair of sidewalls; a pair of beads; and a carcass, wherein the tread is located at a radially outer side, has a shape projecting outward, and includes a main body and a large number of blocks standing outward from a main body outer surface, and each block forms a contact surface that is brought into contact with a road surface, each sidewall extends from an edge of the tread substantially inward in a radial direction, each bead is located inward of the sidewall in an axial direction, the carcass extends on and between the one bead and the other bead and along inner sides of the tread and the sidewalls, the large number of blocks includes a shoulder block located at an axially outer side, each bead includes a core and an apex extending from the core outward in the radial direction, and when an axially outer boundary edge between the main body outer surface and the shoulder block is denoted by Ps and a point of intersection between the main body outer surface and a straight line (Le) that passes through an axially outer edge of the contact surface of the shoulder block and extends perpendicularly to the contact surface is denoted by Pe, a radially outer edge Pr of the apex is located between the boundary edge Ps and the point of intersection Pe in the radial direction wherein a height of the outer edge Pr of the apex from a bead base line is denoted by H, a thickness from an outer surface of the tire to an inner cavity surface of the tire at a height of 0.75H from the bead base line is denoted by Wa, a thickness of the apex at the thickness Wa is denoted by Ta, a thickness from the outer surface of the tire to the inner cavity surface of the tire at a height of 0.5H is denoted by Wb, a thickness of the apex at the thickness Wb is denoted by Tb, a thickness from the outer surface of the tire to the inner cavity surface of the tire at a height of 0.2H is denoted by Wc, and a thickness of the apex at the thickness Wc is denoted by Tc, characterized in that a ratio of the thickness Ta relative to the thickness Wa is equal to or greater than 0.10 and equal to or less than 0.30, a ratio of the thickness Tb relative to the thickness Wb is equal to or greater than 0.10 and equal to or less than 0.30, and a ratio of the thickness Tc relative to the thickness Wc is equal to or greater than 0.10 and equal to or less than 0.35. a tread; a pair of sidewalls; a pair of beads; and a carcass, wherein the tread is located at a radially outer side, has a shape projecting outward, and includes a main body and a large number of blocks standing outward from a main body outer surface, and each block forms a contact surface that is brought into contact with a road surface, each sidewall extends from an edge of the tread substantially inward in a radial direction, each bead is located inward of the sidewall in an axial direction, the carcass extends on and between the one bead and the other bead and along inner sides of the tread and the sidewalls, the large number of blocks includes a shoulder block located at an axially outer side, each bead includes a core and an apex extending from the core outward in the radial direction, and when an axially outer boundary edge between the main body outer surface and the shoulder block is denoted by Ps and a point of intersection between the main body outer surface and a straight line (Le) that passes through an axially outer edge of the contact surface of the shoulder block and extends perpendicularly to the contact surface is denoted by Pe, a radially outer edge Pr of the apex is located between the boundary edge Ps and the point of intersection Pe in the radial direction wherein a height of the outer edge Pr of the apex from a bead base line is denoted by H, a thickness from an outer surface of the tire to an inner cavity surface of the tire at a height of 0.75H from the bead base line is denoted by Wa, a thickness of the apex at the thickness Wa is denoted by Ta, a thickness from the outer surface of the tire to the inner cavity surface of the tire at a height of 0.5H is denoted by Wb, a thickness of the apex at the thickness Wb is denoted by Tb, a thickness from the outer surface of the tire to the inner cavity surface of the tire at a height of 0.2H is denoted by Wc, and a thickness of the apex at the thickness Wc is denoted by Tc, characterized in that a ratio of the thickness Ta relative to the thickness Wa is equal to or greater than 0.10 and equal to or less than 0.30, a ratio of the thickness Tb relative to the thickness Wb is equal to or greater than 0.10 and equal to or less than 0.30, and a ratio of the thickness Tc relative to the thickness Wc is equal to or greater than 0.10 and equal to or less than 0.35.