Constant is a given name, and may refer to:

• André Henri Constant van Hasselt (1806–1874), Flemish poet
• André Marie Constant Duméril (1774–1860), French zoologist
• Constant Chevillon (1880–1944), Grand Master of the Freemasonry Rite of Memphis-Misraïm
• Constant d'Aubigné (circa 1584–1647), French nobleman
• Constant de Kerchove de Denterghem (1790–1865), Belgian liberal politician
• Constant Feith (1884–1958), Dutch amateur football player
• Constant Fornerod (1819–1899), Swiss politician
• Constant Fouard (1837–1903), French ecclesiastical writer
• Constant Huret (1870–1951), long distance track racing cyclist
• Constant Janssen (1895–1970), Belgian physician and businessman
• Constant Lambert (1905–1951), British composer and conductor
• Constant Le Marchand de Lignery (1662–1732), French military officer
• Constant Lestienne (born 1992), French tennis player
• Constant Martin (1910–1995), French engineer and inventor inventor of the clavioline
• Constant Nieuwenhuys (1920–2005), Dutch painter, generally known simply as Constant
• Constant Permeke (1886–1952), Belgian painter
• Constant Prévost (1787–1856), French geologist
• Constant Tonegaru (1919–1952), Romanian poet
• Constant Troyon (1810–1865), French painter
• Constant Vanden Stock (1914–2008), honorary president and former president and player of Belgian football club R.S.C. Anderlecht
• Jean Michel Constant Leber (1780–1859), French historian and bibliophile
• Jean René Constant Quoy (1790–1869), French zoologist
• Marie Philibert Constant Sappey (1810–1896), French anatomist

See also

• Constance (name)
• Constant (surname)
• Constantine (name)
• Constant-Désiré
• Benjamin-Constant
• Benoît-Constant
• Saint-Constant (disambiguation)