Abstract: Its objectives are to provide a golf club shaft that is capable of responding to a wide range of characteristics of a head to be mounted, levels and preferences of golfers, and the like; maintaining the ease of swing even when a heavier head is mounted; providing a preferred feel for a golfer, even when the subject is a professional or low handicap golfer; and increasing the carry of a ball. A golf club shaft made of multiple fiber-reinforced resin layers, containing a heavy substance with a specific gravity of 7 or greater positioned between 0 and 400 mm from the grip end of the golf club shaft; in such a golf club shaft, when the entire length of the golf club shaft is set as Ls and the distance from the head end to the gravity center of the golf club shaft is set as Lg, the ratio Lg/Ls is 0.54˜0.65.