Bernard Stewart or Stuart may refer to: Lord Bernard Stewart (1623–1645), Scottish aristocrat and Royalist commander in the English Civil War Bernard Stewart, Lord of Aubigny (c. 1452–1508), French soldier and diplomat Bernard Denis Stewart (1900-1988), Australian Catholic bishop 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