William Thomas Gray (born January 13, 1938) is an American actor, who, after portraying "Bullseye Tag," younger brother of Annie Oakley in the pilot episode of the TV series Annie Oakley, opted to join the series for which he is best known, playing James "Bud" Anderson, Jr. in Father Knows Best from 1954-1960. Additionally, he portrayed a young Jim Thorpe in Jim Thorpe – All-American and starred in the science fiction movie The Day the Earth Stood Still. He is also a motorcycle collector and businessman.
Gray was born in Los Angeles, California, to William H. and Beatrice Gray, and began acting as a child. His mother was an actress, and the both of them appeared in (separate scenes of) Abbott and Costello Meet the Killer, Boris Karloff, a 1949 horror comedy.