The hydraulic shock absorber includes a cylinder containing a fluid, a damper case positioned outside the cylinder to form a reserving chamber, a piston housed inside the cylinder, a piston rod supporting the piston, a rod guide covering one end of the cylinder, and a guide bushing provided with a through hole through which the piston rod penetrates. The rod guide has an outer circumferential groove formed by spacing apart at least a part of the rod guide from the cylinder in a circumferential direction of the cylinder for allowing the fluid to flow from inside of the cylinder to the reserving chamber, and has an inner circumferential groove for supplying the fluid into an inner circumferential gap between an inner circumferential surface of the guide bushing and an outer circumferential surface of the piston rod as the fluid flows through the outer circumferential groove.