Bicycle hub assembly

A bicycle hub assembly includes a hub shell (10) defining a toothed drive member mounting hole (13) and a locating groove (14), a locating member (30) having a positioning portion (31) accommodated in the locating groove (14) of the hub shell (10), and a toothed drive member (50) having a first locating portion (53) fastened to the positioning portion (31) of the locating member (30) and a plurality of teeth (54). In an alternate form of the invention, the bicycle hub assembly includes a hub shell (10) defining therein a toothed drive member mounting hole (13) and a plug hole (15), a locating member (30) having a positioning portion (31) and a plug portion (32) that is plugged into the plug hole (15) of the hub shell (10), and a toothed drive member (50) having a first locating portion (53) fastened to the positioning portion (31) of the locating member (30) and a plurality of teeth (54) formed therein.