Bernard Stewart (French Bérault Stuart) (c.1452–1508), 3rd Lord of Aubigny, was a French soldier and diplomat belonging to the Scottish family of Stewart of Darnley.

The subject of two ballads by William Dunbar, "The Ballad of Lord Bernard Stewart" and "Elegy on the Death of Lord Bernard Stewart". Castle of Aubigny-sur-Nère.

Ambassador to the King of Scots James IV. Married firstly Guillemette de Boucard (died ?), secondly Anne de Maumont, Countess of Beaumont-le-Roger; so Count (jure uxoris) of Beaumont-le-Roger. Count of Arena, Marquis of Squillace, Marquis of Girace, Duke of Terranuova in the Kingdom of Naples. Order of St Michael.

Bosworth Field. Second Italian War. Battle of Terranuova. Grand Constable of Kingdom of Naples. Captain of Scottish Archers. Governor of Calabria.

Died Corstorphine about 12 June, 1508. Buried ?

Traité sur l'art de la guerre (reprinted 1976).

Reference

• Contamine, Philippe, "Entre France et Écosse: Bérault Stuart, seigneur d'Aubigny (vers 1452–1508), chef de guerre, diplomate, écrivain militaire", in James Laidlaw (ed.) The Auld Alliance: France and Scotland over 700 years. Edinburgh University, Edinburgh, 1999. ISBN 0-9-534945-00