Bernard Stewart or Stuart may refer to: Lord Bernard Stewart (1623–1645), Scottish aristocrat and Royalist commander in the English Civil War Bernard Stewart, 4th Lord of Aubigny (c. 1452–1508), French soldier and diplomat Bernard Denis Stewart (1900-1988), Australian Catholic bishop Bernard Halley Stewart, British physician Bernard Stewart, alias used by Ernie O'Malley (1897–1957), Irish Republican Army officer, upon his capture Bernard Stuart, 18th century abbot of Scots Monastery, Regensburg