A ride-on mower with a mower unit attached to a frame unit includes a headlight housing extending in a transverse direction of the vehicle body over the width of the frame unit and fixed to the frame unit forwardly of a front end of the mower deck. A right and left pair of headlight units are housed in the headlight housing. Light passage portions are formed in opposite end portions of the headlight housing for directing light coming from each of the headlight unit to the side and/or to the rear toward a direction of the front end of the mower deck.