A body cover construction for a motorcycle comprising a body cover having: a front mudguard which is provided so as to cover an outer circumference of a front wheel from thereabove; a front cover which covers a front portion of a vehicle body from a front to sides of a headstock; step floorboards which are disposed to extend from a lower and rear portion of the front cover to below a mounting seat so that feet of a rider rest thereon; and under side covers which cover sides of the vehicle body which lie below and forwards of the step floorboards, wherein a lower edge portion of a front side surface of the front cover extends in a front-to-rear direction and is formed substantially at the same level as a lower edge portion of a mudguard side surface of the front mudguard such that the lower edge portion of the front side surface and the lower edge portion of the mudguard side surface are slightly offset from each other when the vehicle body is seen from a side thereof, and wherein a front upper end portion of the under side cover extends upwards to a position which is spaced a predetermined distance away from the lower edge portion of the front side surface; characterised in that there is provided a front lower cover which covers a front surface of the vehicle body situated at the rear of the front wheel below the front cover, in that a projecting portion is formed on the front lower cover so as to be exposed between the lower edge portion of the front side surface and the front upper end portion and so as to face an external surface of the body cover, and in that the projecting portion curves convexly towards the front of the vehicle body. a front mudguard which is provided so as to cover an outer circumference of a front wheel from thereabove; a front cover which covers a front portion of a vehicle body from a front to sides of a headstock; step floorboards which are disposed to extend from a lower and rear portion of the front cover to below a mounting seat so that feet of a rider rest thereon; and under side covers which cover sides of the vehicle body which lie below and forwards of the step floorboards, wherein a lower edge portion of a front side surface of the front cover extends in a front-to-rear direction and is formed substantially at the same level as a lower edge portion of a mudguard side surface of the front mudguard such that the lower edge portion of the front side surface and the lower edge portion of the mudguard side surface are slightly offset from each other when the vehicle body is seen from a side thereof, and wherein a front upper end portion of the under side cover extends upwards to a position which is spaced a predetermined distance away from the lower edge portion of the front side surface; characterised in that there is provided a front lower cover which covers a front surface of the vehicle body situated at the rear of the front wheel below the front cover, in that a projecting portion is formed on the front lower cover so as to be exposed between the lower edge portion of the front side surface and the front upper end portion and so as to face an external surface of the body cover, and in that the projecting portion curves convexly towards the front of the vehicle body.