Lenoir or LeNoire is a surname that may refer to:
Alban Lenoir (born 1980), French actor, screenwriter and stuntman Alexandre Lenoir (1761–1839), French archaeologist Axelle Lenoir, (born 1979), Canadian comics creator Billy Lenoir (1942–2007), American tennis player Charles-Amable Lenoir (1860–1926), French painter Deommodore Lenoir (born 1999), American football player Étienne Lenoir (1822–1900), Belgian engineer, inventor of the internal combustion engine Étienne Lenoir (instrument maker) (1744–1832), French instrument maker, inventor of the repeating circle Frédéric Lenoir (born 1962), French sociologist, philosopher and writer Jean-Charles-Pierre Lenoir (1732–1807), French lawyer and police administrator Jean Lenoir (composer) (1891–1976), French composer J. B. Lenoir (1929–1967), African American blues musician Lance Lenoir (born 1995), American football player Maxime Lenoir (1888-1916), French flying ace Noémie Lenoir (born 1979), French model and actress Pierre Charles Lenoir (1879-1953), French sculptor Rosetta LeNoire (1911–2002), American actress, producer, and casting agent William Lenoir (general) (1751–1839), American Revolutionary War officer William B. Lenoir (1939–2010), American engineer and NASA astronaut William Ballard Lenoir (1775–1852), American member of Tennessee state house of representatives