Lagarde is a French surname. Notable people with the surname include:
Alfred Lagarde (1948–1998), Dutch voice actor
Céline Laguarde (1873–1961), French photographer, a member of the Pictorialist movement
Charles Lagarde (1878–?), French Olympic athlete
Christine Lagarde (born 1956), French politician, current President of the European Central Bank and former Managing Director of the IMF
Claude Lagarde (1895–1983), French Olympic shooter
Claude François Chauveau-Lagarde (1756–1841), French lawyer and political figure
Jean-Christophe Lagarde (born 1967), French political figure
Jocelyne LaGarde (1924–1979), Tahiti-born Hawaiian personality, noted for appearance in 1966 film Hawaii
Karloff Lagarde (1928–2007), Mexican athlete in professional wrestling
Karloff Lagarde, Jr. (1970–2024), Mexican athlete in professional wrestling
Léonce Lagarde (1860–1936), French political figure
Maurice L. Lagarde (f. 2000s), US businessman
Maxime Lagarde (born 1994), French chess grandmaster
Paul Lagarde (1891–?), French Olympic pole vaulter
Paul de Lagarde (1827–1891), German scientist and academician
Tom LaGarde (born 1955), American basketball player