Delaunay is a French surname. Variant: de Launay. Notable people with the surname include:
People Arts Catherine Delaunay (born 1969), French jazz clarinet player and composer Charles Delaunay (1911–1988), French author and jazz expert Constance Delaunay (1922-2013), French translator, playwright, novelist and short stories writer Jules-Élie Delaunay (1828–1891), French painter Louis Arsene Delaunay (1826–1903), French actor Robert Delaunay (1885–1941), French artist Joan de Launay Fine Artist, Film,Television Awards - Choral Singer Rose Delaunay (1857–after 1937), French opera ainger Sonia Delaunay (1885–1979), Ukrainian-French artist Vadim Delaunay (1947–1983), Russian poet and dissident
Football Henri Delaunay (1883–1955), French football administrator Jean-Pierre Delaunay (born 1966), French footballer Pierre Delaunay, football administrator
Science Boris Delaunay (1890–1980), Soviet/Russian mathematician, inventor of Delaunay triangulation Charles-Eugène Delaunay (1816–1872), French astronomer and mathematician Nikolai Delaunay, Junior (1926–2008), Soviet physicist
Politics Joseph Delaunay (1752–1794), sometimes called Delaunay d'Angers; a revolutionary-era French politician Michèle Delaunay (born 1947), member of the National Assembly of France
Fictional characters Various characters in the fantasy novel Kushiel's Dart (2001)
See also
Delaunay-Belleville, a French luxury automobile Delaunay (crater), a lunar crater Delaunay triangulation, a way to divide a plane into triangles