William Kelley

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 (American football) (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 (born 1939), American physician