Arnauld
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)