Arnauld is a surname and a masculine given name. It may refer to:
Surname Agnès Arnauld (1593–1672), abbess of the Abbey of Port-Royal, near Paris, and a major figure in French Jansenism Antoine Arnauld (1612–1694), French Catholic theologian, philosopher and mathematician Antoine Arnauld (lawyer) (1560–1619), French lawyer in the Parlement de Paris and a Counsellor of State under King Henry IV of France Antoine Arnauld (1616–1698), French memoirist Carol Arnauld (1961–2022), French singer and songwriter Céline Arnauld (1885–1952), Romanian writer Henri Arnauld (1597–1692), French Catholic bishop Isaac Arnauld (1566–1617), seigneur de Corbeville and Intendant des finances of France Jean Arnauld, French 17th century philosopher and theologian Marie Angélique Arnauld (1591–1661), abbess of the Abbey of Port-Royal Simon Arnauld, Marquis de Pomponne (1618–1699), French diplomat and minister
Given name Arnauld Mercier (born 1972), French former football player and current manager Arnauld de Oihenart (1592–1668), Basque lawyer, politician, historian and poet
See also Friedrich von Arnauld de la Perière (1888–1969), German Luftwaffe Generalleutnant (lieutenant general) Lothar von Arnauld de la Perière (1886–1941), German U-boat commander and the most successful submarine commander in history Arnaud (disambiguation) Arnaud (given name) Arnaud (surname)