Bill Walker, American basketball player
William Henry Walker (born October 9, 1987) is an American professional basketball player who last played for the Rain or Shine Elasto Painters of the Philippine Basketball Association (PBA). Previously known as Bill Walker, the 6-foot-6-inch-tall (1.98 m) player was selected out of Kansas State University by the Washington Wizards with the 47th overall pick in the second round of the 2008 NBA draft and traded shortly thereafter to the Boston Celtics in exchange for cash considerations.