A thermoplastic polyurethane resin composition comprising: a thermoplastic polyurethane resin; an ultraviolet absorber; a hindered amine light stabilizer; and an antioxidant, wherein the thermoplastic polyurethane resin is a reaction product of an isocyanate component containing an aliphatic polyisocyanate, a chain extender, and a polyol component containing a polycarbonate diol having a side-chain alkyl group, the ultraviolet absorber contains an ultraviolet absorber having a benzotriazole skeleton, and an ultraviolet absorber having a triazine skeleton, the ultraviolet absorber having a triazine skeleton has a maximum absorption wavelength in a range from greater than or equal to 250 nm to less than or equal to 290 nm, a mass ratio / of the ultraviolet absorber having a benzotriazole skeleton to the ultraviolet absorber having a triazine skeleton is greater than or equal to 2.5/1 and less than or equal to 10/1, the sum of a content of the ultraviolet absorber having a benzotriazole skeleton and a content of the ultraviolet absorber having a triazine skeleton is greater than or equal to 0.6 part by mass and less than or equal to 1.2 parts by mass with respect to 100 parts by mass of the thermoplastic polyurethane resin, a content of the hindered amine light stabilizer is greater than or equal to 0.2 part by mass and less than or equal to 2.0 parts by mass with respect to 100 parts by mass of the thermoplastic polyurethane resin, and a content of the antioxidant is greater than or equal to 0.05 part by mass and less than or equal to 1.0 part by mass with respect to 100 parts by mass of the thermoplastic polyurethane resin. a thermoplastic polyurethane resin; an ultraviolet absorber; a hindered amine light stabilizer; and an antioxidant, wherein the thermoplastic polyurethane resin is a reaction product of an isocyanate component containing an aliphatic polyisocyanate, a chain extender, and a polyol component containing a polycarbonate diol having a side-chain alkyl group, the ultraviolet absorber contains an ultraviolet absorber having a benzotriazole skeleton, and an ultraviolet absorber having a triazine skeleton, the ultraviolet absorber having a triazine skeleton has a maximum absorption wavelength in a range from greater than or equal to 250 nm to less than or equal to 290 nm, a mass ratio / of the ultraviolet absorber having a benzotriazole skeleton to the ultraviolet absorber having a triazine skeleton is greater than or equal to 2.5/1 and less than or equal to 10/1, the sum of a content of the ultraviolet absorber having a benzotriazole skeleton and a content of the ultraviolet absorber having a triazine skeleton is greater than or equal to 0.6 part by mass and less than or equal to 1.2 parts by mass with respect to 100 parts by mass of the thermoplastic polyurethane resin, a content of the hindered amine light stabilizer is greater than or equal to 0.2 part by mass and less than or equal to 2.0 parts by mass with respect to 100 parts by mass of the thermoplastic polyurethane resin, and a content of the antioxidant is greater than or equal to 0.05 part by mass and less than or equal to 1.0 part by mass with respect to 100 parts by mass of the thermoplastic polyurethane resin.