Lagrange, la Grange or La Grange is a French surname that may refer toLa Grange (actor) (1635–1692), French actor
Étienne de La Grange, French politician
Anne-Marie Lagrange, (1962-) French astronomer
Georges Lagrange (1928–2004), translator to and writer in Esperanto
Georges Lagrange (bishop) (1929–2014), French Catholic bishop
Henri Albert de La Grange d'Arquien (1613–1707), French nobility
Henri Lagrange - Action Française activist
Henry-Louis de La Grange (1924–2017), French musicologist
Joseph Lagrange (soldier) (1763–1836), French infantry general
Joseph-Louis Lagrange (1736–1813), mathematician and astronomer
Ken La Grange (1923–2001), South African boxer
Kyla La Grange, English singer and songwriter
Léo Lagrange (1900–1940), French minister
Louis André Lagrange (1804–1861), French naval commissioner, twice acting governor of Martinique
Magdelaine de La Grange (1641–1679), French fortune-teller involved in the Affair of the Poisons
Marcus la Grange, South African sprinter
Marie-Joseph Lagrange (1855–1938), Catholic priest in the Dominican Order
Nicolas La Grange (1707–1767), French playwright and translator
Oscar Hugh La Grange (1837–1915), Union Army colonel in the American Civil War
Pierre Lagrange, Belgian hedge fund manager
Reginald Garrigou-Lagrange (1877–1964), Dominican Thomist theologian and philosopher
René de Béthoulat de La Grange-Fromenteau, governor of Saint-Christophe, 1638-39
Zelda La Grange, secretary to the South African President Nelson Mandela