SHOCK ABSORBER

There is provided a shock absorber enabling a shock at the time of transition from a low speed region to a high speed region to be reduced without impairing ride quality in an ultra-low speed region. The shock absorber includes a compression-side second damping passage connecting two chambers to each other by bypassing a compression-side main valve opening/closing a compression-side first damping passage connecting the two chambers to each other to give resistance to flow of liquid flowing in the compression-side first damping passage and a compression-side throttle valve throttling the compression-side second damping passage. The compression-side throttle valve includes a housing including a valve seat, a case inserted in the housing, a valve body movably inserted at one end thereof in the case, and a coil spring biasing the valve body to the side of the valve seat.