John or Johnny Orr may refer to:John Boyd Orr (1880–1971), Scottish doctor, biologist, politician and Nobel peace laureate Sir John Orr (1918–1995), Scottish police officer and the first chief constable of Lothian & Borders Police John Herbert Orr (1911–1984), American entrepreneur John Leonard Orr, American arsonist, former fire captain and arson investigator John Orr (bishop) (1874–1938), Bishop of Tuam, Killala, and Achonry John Orr (businessman) (1858–1932), founder of John Orr's, a South African department store chain Sir John Orr (1945–2018), Scottish police officer, Chief Constable of Strathclyde Police (1996–2001) John Orr (1865–1935), Scottish rugby football player John Orr (1885–1966), British linguist John Stewart Orr (1930–2001), Scottish medical physicist and researcher Johnny Orr (1918–1982), American basketball and baseball player Johnny Orr (1927–2013), American basketball player and coach Johnny Orr (footballer) (1888–1971), Scottish footballer with Blackburn Rovers John William Orr (1815–1887), known professionally as J. W. Orr, prominent American wood engraver John Orr (1870–?), Scottish lawn bowler John Orr, Scottish indoor bowler John Orr (priest), Irish Anglican priest