A golf club shaft having at least six full-length layers composed of prepregs. The full-length layers are divided into an inner-layer part including a half of the full-length layers and an outer-layer part including a remaining half of the full-length layers. At least one pair of the full-length layers is formed as a bias set layer in each of the inner-layer part and the outer-layer part by layering two bias layers with each other, with reinforcing fibers of the bias layers intersecting with each other at an orientation angle of .+-..theta..degree. which fall in a range from .+-.25.degree. to .+-.65.degree. with respect to an axis of the golf club shaft. A straight layer is formed as an outermost full-length layer of the outer-layer part with reinforcing fiber thereof orienting at the range from 0.degree. to .+-.10.degree. with respect to the axis of the shaft.