William or Bill Jeffrey may refer to: Bill Jeffrey (born 1948), British civil servant William A. Jeffrey, American scientist William Jeffrey (cricketer) (1950–1993), Guyanese cricket player and coach William Jeffrey (footballer) (1866–1932), English footballer with Burnley, Arsenal and Southampton William Jeffrey (American soccer) (1892–1966), head coach of the 1950 United States World Cup team William Jeffrey (Tsimshian chief) (born 1899), hereditary Tsimshian Chief, First Nations activist and carver William Jeffrey, a pseudonym of writer Bill Pronzini