A vehicle headlamp comprising: a light source having a light emitting surface, the light emitting surface including at least a linear side; and a reflector comprising a reflecting surface and a concave portion, the reflector being adapted to reflect light emitted by the light source to form a light distribution pattern (PL, PA) having a first horizontal cut-off line and a second cut-off line, wherein the first cut-off line and the second cut-off line intersect each other with an angle, wherein the vehicle headlamp comprises an optical axis and a transverse direction which is in the horizontal plane and which is perpendicular to the optical axis, wherein the light emitting surface is in the (X, Y) plane defined by the optical axis and the direction, wherein the reflector comprises a left region disposed on a left side in the transverse direction, and a right region disposed on a right side in the transverse direction, wherein the reflector further comprises a plurality of first reflecting portions configured to form the first cut-off line by images of said linear side of the light emitting surface reflected on the first reflecting portions and a plurality of second reflecting portions configured to form the second cut-off line by images of said linear side of the light emitting surface reflected on the second reflecting portions, wherein the light source is disposed so that said linear side of the light emitting surface is oblique with respect to the optical axis characterized in that the sizes of the areas of the right region and the left region are different from each other, both of the first reflecting portions and the second reflecting portions are positioned in the one of the right region and the left region having a larger area than the other one, wherein the reflecting surface has a hot zone forming portion forming the light distribution pattern for a hot zone including the first and second cut-off lines (CL1, CL2) and two diffusion region forming portions (24B, 24C) forming a diffusion light distribution pattern, the hot zone forming portion being disposed between the two diffusion region forming portions (24B, 24C), one of the diffusion region forming portion being on the left side of the hot zone forming portion, the other one being on the right side of the hot zone forming portion, wherein the diffusion light distribution pattern is longer in the horizontal direction than the light distribution pattern for the hot zone. a light source having a light emitting surface, the light emitting surface including at least a linear side; and a reflector comprising a reflecting surface and a concave portion, the reflector being adapted to reflect light emitted by the light source to form a light distribution pattern (PL, PA) having a first horizontal cut-off line and a second cut-off line, wherein the first cut-off line and the second cut-off line intersect each other with an angle, wherein the vehicle headlamp comprises an optical axis and a transverse direction which is in the horizontal plane and which is perpendicular to the optical axis, wherein the light emitting surface is in the (X, Y) plane defined by the optical axis and the direction, wherein the reflector comprises a left region disposed on a left side in the transverse direction, and a right region disposed on a right side in the transverse direction, wherein the reflector further comprises a plurality of first reflecting portions configured to form the first cut-off line by images of said linear side of the light emitting surface reflected on the first reflecting portions and a plurality of second reflecting portions configured to form the second cut-off line by images of said linear side of the light emitting surface reflected on the second reflecting portions, wherein the light source is disposed so that said linear side of the light emitting surface is oblique with respect to the optical axis characterized in that the sizes of the areas of the right region and the left region are different from each other, both of the first reflecting portions and the second reflecting portions are positioned in the one of the right region and the left region having a larger area than the other one, wherein the reflecting surface has a hot zone forming portion forming the light distribution pattern for a hot zone including the first and second cut-off lines (CL1, CL2) and two diffusion region forming portions (24B, 24C) forming a diffusion light distribution pattern, the hot zone forming portion being disposed between the two diffusion region forming portions (24B, 24C), one of the diffusion region forming portion being on the left side of the hot zone forming portion, the other one being on the right side of the hot zone forming portion, wherein the diffusion light distribution pattern is longer in the horizontal direction than the light distribution pattern for the hot zone.