Hardouin is used as both a surname and a given name. Notable people with the name include:
*
Hardouin (archbishop),
Archbishop of Tours
The Archdiocese of Tours (; ) is a Latin Church archdiocese of the Catholic Church in France. The archdiocese has roots that go back to the 3rd century, while the formal erection of the diocese dates from the 5th century.
The ecclesiastical pro ...
from 960 to 980
*
Hardouin de Graetz, or Ortwin (1475–1542), German scholar and theologian
*
Hardouin Mansart, or Jules Hardouin Mansart (1646–1708), French architect
*
Charles Hardouin
Charles Hardouin (1694 in Brittany, fl. Paris – 1718) was a French operatic baritone (''basse taille'').
Beginning his career as a cathedral singer, Hardouin was engaged by the Paris Opéra as a principal singer around 1693–1694, though from ...
(1694-1718), French operatic baritone
*
Jean Hardouin
Jean Hardouin (; ; ; 23 December 1646 – 3 September 1729), was a French priest and classical scholar who was well known during his lifetime for his editions of ancient authors, and for writing a history of the ecumenical councils. However, he ...
(1646–1729), French classical scholar
*
Jean-Louis Hardouin Michelin de Choisy, French malacologist and palaeontologist
*
Maria Hardouin (1864-1954), Italian noblewoman, wife of
Gabriele D'Annunzio
*
Maria Le Hardouin (1912-1967), Swiss French-speaking writer and woman of letters
{{given name, Type=both, cat1=Surnames of Norman origin, cat2=Germanic-language surnames