A side mirror includes a mount seat mounted to a front cowl that covers a portion of the front of a vehicle body, a mirror stay supported on the mount seat with a basal end thereof supported in a turnable manner, and a mirror provided at a tip end of the mirror stay. The mount seat includes a base portion 41a extended in one direction and mounted to the front cowl, and a support portion provided on the base portion 41a to support the basal end of the mirror stay so that a direction Dp in which a turning shaft of the mirror stay extends is inclined to a length direction DL of the base portion. With this structure, a side mirror increased in degree of freedom in selecting a mount position on a front cowl can be provided.