An open face helmet includes an outer shell and a shock-absorbing liner, as well as a fixing member on the front side of the inner surface of the right side of the outer shell for the attachment of a removable cheek pad. The cheek pad includes a shock-absorbing member and a cushioning member stacked thereon, as well as an engaging body to be removably engaged with the fixing member. The fixing member is opposed to the front edge of the shock-absorbing liner, having a slit to be engaged with or disengaged from the engaging body in a front-back direction. The cheek pad is supported on the inner surface of the right side of the helmet shell by an engagement of the engaging body with the slit and a face-to-face contact of the back edge of the cheek pad with the front edge of the shock-absorbing liner.