A bicycle wheel rim includes an annular rim body having spaced left and right annular tire retaining walls adapted for retaining a bicycle tire therebetween, and an annular connecting wall interconnecting the tire retaining walls and cooperating with the tire retaining walls so as to confine a tire receiving space thereamong. A spoke mounting seat extends from the rim body and is disposed outwardly of the tire receiving space. The spoke mounting seat is formed with a plurality of spoke fastening holes therethrough for mounting of the spokes thereon.