Tail lamp structure for motorcycle

The invention provides a tail lamp structure (40) for a motorcycle (1), which is capable of sufficiently ensuring a lighting area of a brake lamp even if the tail lamp structure (40) is disposed inside a rear end portion of a rear cowl (13), which portion has a shape whose lateral width becomes narrow as nearing to an upper end of the rear cowl (13). A tail lamp unit (40) is disposed inside a rear end portion of a rear cowl (13), which portion has a shape whose lateral width becomes narrow as nearing to an upper end of the rear cowl (13). A tail lamp (47) is disposed on an upper portion of the tail lamp structure and a brake lamp (48) is disposed under the tail lamp (47), whereby a sufficient lighting area of the brake lamp can be ensured.