William Orr

Bill, Billy or William Orr may refer to:

• Bill Orr (Nebraska first gentleman) (1935–2013), American insurance executive and Nebraska's first and only First Gentleman
• Billy Orr (baseball) (1891–1967), Major League Baseball infielder
• Billy Orr (footballer) (1883–?), Australian rules footballer
• Billy Orr (ice hockey) (born 1948), Canadian professional ice hockey defenceman
• William Orr (Australian politician) (1843–1929)
• William Orr (trade unionist) (1900–1954), Australian coal miner and trade unionist
• William Orr (United Irishman) (1766–1797), member of the United Irishmen who was executed in 1797
• William Edwin Orr (1881–1965), U.S. federal judge
• William I. Orr (1919–2001), American amateur radio licensee and author
• William T. Orr (1917–2002), television producer
• Willie Orr (1873–1946), Scottish football player and manager
• William McFadden Orr (1866–1934), British and Irish mathematician