Longstreet is an English surname. Notable people with the surname include:
Augustus Baldwin Longstreet (1790–1870), American humorist, lawyer, college president, Southerner, writer Charles Longstreet Weltner (1927–1992), American jurist and politician Edward Longstreet Bodin (1894–1983), American writer Hattie Longstreet Price (1891–1968), American artist and illustrator Helen Dortch Longstreet (1863–1962), American author and feminist, second wife of James Longstreet Husan Longstreet, American football player James Longstreet (1821–1904), Confederate general Martha Longstreet (1870–1953), American physician Richard Longstreet Tea (1840–1911) American soldier Stephen Longstreet (1907–2002), American author Victor M. Longstreet (1906–2000), American economist and Assistant Secretary of the Navy William Longstreet (c. 1760–1814), American inventor