Reinagle is a surname. Notable people with the surname include:
Alexander Reinagle (1756–1809), English-born American composer and organist Caroline Reinagle (born Orger; 1818–1892), English composer, pianist, and writer George Philip Reinagle (1802–1835), English marine painter, son of Ramsay Richard Reinagle Hugh Reinagle (c. 1790–1834), American painter Joseph Reinagle (1762–1836), English music composer and cellist Philip Reinagle (1749–1833), English animal, landscape and botanical painter Ramsay Richard Reinagle (1775–1862), English portrait, landscape and animal painter, and son of Philip Reinagle