A lighting tool for a vehicle comprising: a light source; a first light guide lens disposed in front of the light source; and a light guide section, wherein the light source includes a plurality of light emitting elements (5a, 5b, 5c) mounted on a same substrate, wherein the first light guide lens includes a first entering section located on a side facing the light source and a first emitting section located on an opposite side with respect to the first entering section, wherein the first emitting section has an inclined shape or a curved shaped so that at least an outer side in a vehicle width direction thereof retreats further than an inner side in the vehicle width direction thereof with respect to a vehicle forward and rearward direction, wherein an outer end portion of the first light guide lens in the vehicle width direction configures a curved section which is curved upward, wherein the plurality of light emitting elements (5a, 5b, 5c) are disposed so as to be aligned from an inner side toward an outer side in the vehicle width direction, and include (i) a first light emitting element disposed at a position overlapping the first entering section at the inner side in the vehicle width direction when seen in a front view, and (ii) a second light emitting element disposed at a position that does not overlap the first entering section at the outer side in the vehicle width direction when seen in the front view, wherein the light guide section, which is configured to guide at least a part of light emitted from the second light emitting element to a position of the first entering section corresponding to the curved section in the vehicle width direction, is provided between the second light emitting element and the first entering section, wherein the light guide section includes a second entering end portion and a light guide reflecting section, wherein the second entering end portion is configured to cause at least some of light, which is emitted from at least two second light emitting elements disposed around the curved section of the outer end portion of the first light guide lens in the vehicle width direction, to enter the second entering end portion and to totally reflect the entered light towards the light guide reflecting section, wherein the light guide reflecting section is configured to guide the light entered from the second entering end portion to the position of the first entering section corresponding to the curved section while totally reflecting the light within the light guide reflecting section, and the first entering section includes a first entering end portion configured to cause light emitted from the first light emitting element to enter the first light guide lens. a light source; a first light guide lens disposed in front of the light source; and a light guide section, wherein the light source includes a plurality of light emitting elements (5a, 5b, 5c) mounted on a same substrate, wherein the first light guide lens includes a first entering section located on a side facing the light source and a first emitting section located on an opposite side with respect to the first entering section, wherein the first emitting section has an inclined shape or a curved shaped so that at least an outer side in a vehicle width direction thereof retreats further than an inner side in the vehicle width direction thereof with respect to a vehicle forward and rearward direction, wherein an outer end portion of the first light guide lens in the vehicle width direction configures a curved section which is curved upward, wherein the plurality of light emitting elements (5a, 5b, 5c) are disposed so as to be aligned from an inner side toward an outer side in the vehicle width direction, and include (i) a first light emitting element disposed at a position overlapping the first entering section at the inner side in the vehicle width direction when seen in a front view, and (ii) a second light emitting element disposed at a position that does not overlap the first entering section at the outer side in the vehicle width direction when seen in the front view, wherein the light guide section, which is configured to guide at least a part of light emitted from the second light emitting element to a position of the first entering section corresponding to the curved section in the vehicle width direction, is provided between the second light emitting element and the first entering section, wherein the light guide section includes a second entering end portion and a light guide reflecting section, wherein the second entering end portion is configured to cause at least some of light, which is emitted from at least two second light emitting elements disposed around the curved section of the outer end portion of the first light guide lens in the vehicle width direction, to enter the second entering end portion and to totally reflect the entered light towards the light guide reflecting section, wherein the light guide reflecting section is configured to guide the light entered from the second entering end portion to the position of the first entering section corresponding to the curved section while totally reflecting the light within the light guide reflecting section, and the first entering section includes a first entering end portion configured to cause light emitted from the first light emitting element to enter the first light guide lens.