William Kelley may refer to:William Kelley (baseball) (1875–?), American baseball player William K. Kelley, deputy White House counsel for the George W. Bush administration William Donald Kelley (1925–2005), orthodontist and inventor of alternative cancer treatments William D. Kelley (1814–1890), U.S. representative from Pennsylvania William Melvin Kelley (1937–2017), African-American novelist and short-story writer Bill Kelley (1926–2015), American football tight end who played for the Green Bay Packers in 1949 William Kelley (screenwriter) (1929–2003), American screenwriter and producer William B. Kelley (1942–2016), Chicago gay activist and lawyer William Nimmons Kelley, American physician