To provide a fork member for supporting a shock absorber capable of surely retaining a shock absorber without requiring any high fastening force and capable of saving materials, thereby reducing weight and a cost.

This fork member for supporting the shock absorber is constructed of a circular arc arm part 13 serving as a component of a suspension device, a holder 14 integrally formed in the upper end of the arm part 13 for housing the lower end of the shock absorber 21 and retaining it, and a pin connection part 15 arranged in the lower end of the arm part 13 and having a connection pin for connection with a lower link member 40. The inner circumferential face of the holder 14 is formed with surface roughnesses of 3-10a.