A vehicle lamp comprising: a light source including a plurality of light emitting elements or light emitting surfaces, wherein the plurality of light emitting elements or light emitting surfaces (5, 5a) are disposed in parallel at least in a first direction; a projection lens disposed in front of the light source and which projects light emitted from the light source; and a light distribution adjusting element that adjusts light distribution of the light emitted from the light source, wherein the light distribution adjusting element has a front surface and a rear surface which are perpendicular to an optical axis (Ax) of the light emitted from the light source and which are opposite to each other, wherein a first prism surface is formed on one of the front surface or the rear surface, wherein the first prism surface includes a plurality of inclined surfaces (11a, 11b, 12a, 12b) and a plurality of flat surfaces (13, 13a, 13b, 13c, 13d) that form a plurality of prisms (11, 12, 14), wherein the plurality of flat surfaces (13, 13a, 13b, 13c, 13d) are parallel to a surface perpendicular to the optical axis (Ax), wherein the plurality of flat surfaces (13, 13a, 13b, 13c, 13d) is disposed at an apex section or a bottom section of the plurality of inclined surfaces (11a,11b, 12a, 12b), wherein the plurality of prisms (11, 12, 14) have different angles (α, β, γ) of inclined surfaces (11a,11b, 12a, 12b, 14a, 14b), wherein the plurality of flat surfaces (13, 13a, 13b, 13c, 13d) and the plurality of inclined surfaces (11a, 11b, 12a, 12b) are formed to extend in a direction which crosses with the first direction. a light source including a plurality of light emitting elements or light emitting surfaces, wherein the plurality of light emitting elements or light emitting surfaces (5, 5a) are disposed in parallel at least in a first direction; a projection lens disposed in front of the light source and which projects light emitted from the light source; and a light distribution adjusting element that adjusts light distribution of the light emitted from the light source, wherein the light distribution adjusting element has a front surface and a rear surface which are perpendicular to an optical axis (Ax) of the light emitted from the light source and which are opposite to each other, wherein a first prism surface is formed on one of the front surface or the rear surface, wherein the first prism surface includes a plurality of inclined surfaces (11a, 11b, 12a, 12b) and a plurality of flat surfaces (13, 13a, 13b, 13c, 13d) that form a plurality of prisms (11, 12, 14), wherein the plurality of flat surfaces (13, 13a, 13b, 13c, 13d) are parallel to a surface perpendicular to the optical axis (Ax), wherein the plurality of flat surfaces (13, 13a, 13b, 13c, 13d) is disposed at an apex section or a bottom section of the plurality of inclined surfaces (11a,11b, 12a, 12b), wherein the plurality of prisms (11, 12, 14) have different angles (α, β, γ) of inclined surfaces (11a,11b, 12a, 12b, 14a, 14b), wherein the plurality of flat surfaces (13, 13a, 13b, 13c, 13d) and the plurality of inclined surfaces (11a, 11b, 12a, 12b) are formed to extend in a direction which crosses with the first direction.