William Harper

William, Will, Willie, Bill, or Billy Harper may refer to:

• William A. Harper (1873–1910), Canadian-born artist
• Billy Harper (born 1943), American jazz saxophonist
• William Claude Harper (born 1944), American jewelry artist
• William Harper (composer) (born 1949), American composer and photographer
• William Jackson Harper (born 1980), American actor

• William Harper (South Carolina politician) (1790–1847), US Senator from South Carolina
• William Harper (Louisiana politician) (died 1909), American politician in Louisiana
• William Harper (Rhodesian politician) (1916–2006), Royal Air Force pilot and Rhodesian politician

• Billy Harper (footballer, born 1877) (1877–1947), English footballer
• Bill Harper (footballer, born 1897) (1897–1989), Scottish football goalkeeper
• Billy Harper (footballer, born 1897) (1897–1982), English footballer
• Bill Harper (footballer, born 1900) (born 1900), Scottish football goalkeeper

• Bill Harper (baseball) (1889–1951), American baseball pitcher
• Bill Harper (soccer) (fl. 1968), Canadian soccer player
• Willie Harper (born 1950), American football linebacker

• William Rainey Harper (1856–1906), American academic, first president of the University of Chicago
• William Edmund Harper (1878–1940), Canadian astronomer
• William Harper Jr. (fl. 1910s), American pioneer aviator with the Wright brothers

• William Harpur (died 1574), merchant and Lord Mayor of London