Lacour or LaCour may refer to:

• Lacour, commune in southern France
• Lacour, Louisiana, community in the U.S.
• Lacour-d'Arcenay, commune in eastern France

• Paul-Armand Challemel-Lacour (1827-1896), French statesman
• Josephine White deLacour (1849-1929), American physician, suffragist
• Alice Vassar LaCour (1870s – 1924), American educator, singer
• Edmund G. LaCour Jr. (born 1985), American lawyer
• Fred LaCour (1938-1972), American professional basketball player
• Georges Lacour-Gayet (1856-1935), French historian
• Guillaume Lacour (born 1980), French former professional footballer
• Guy Lacour (1932-2013), French composer
• Joan LaCour Scott (1921-2012), American trade union activist, screenwriter
• José-André Lacour (1919-2005), Belgian novelist, playwright, translator, screenwriter, director
• Lenny LaCour (born 1932), American record producer, songwriter
• Léopold Lacour (1854–1939), French teacher, sociologist, writer, feminist
• Marcelle de Lacour (1896-1997), French harpsichordist, teacher
• Nina LaCour, American author
• Pierre Lacour (1745-1814), French painter
• Pierre Lacour (the younger) (1778-1859), French painter, engraver
• Quentin Lacour (born 1993), French professional footballer
• Reginald B. DeLacour (1886-1948), Adjutant General of the State of Connecticut, U.S.
• Robert Lacour-Gayet (1896-1989), French banking official, historian, author, educator
• Rolf Lacour (1937-2018), German wrestler
• Stéphanie P. Lacour (born c. 1975), French neurotechnologist
• Marie Léopold-Lacour (1859-1942), French feminist activist, journalist, writer