To allow the shape of a front cowling to be freely designed without depending on the shape of a head lamp.

This front cowling device for a motorcycle is provided with a front cowling 37 formed in such a way as to surround a head lamp 7, and a cowling stay 39 for supporting the front cowling 37. The front cowling 37 is constituted as a vertically bisected type vertically bisected with a head lamp opening part placed in between. Either one of upper and lower cowling constituent members 37A, 37B constituting the front cowling 37 is provided with an annular frame part 41 forming the head lamp opening part, and the annular frame part 41 is provided with a light leak preventing member for the head lamp 7.