Robert Stewart (or Stuart) (c. 1470–1544), Lord of Aubigny, Count of Beaumont-le-Roger, was a French soldier belonging to the family of Stewart of Darnley. Robert was the fourth son of John Stewart, 1st Earl of Lennox and Margaret Montgomerie. He inherited the Lordship of Aubigny through his marriage to his cousin Anne Stewart, daughter of Bernard Stewart, Lord of Aubigny (died 1508). Robert began his military career in 1493 when he joined the Garde Écossaise of King Charles VIII of France. He served with Bernard in Italy in Charles VIII's Italian War and later in that of Louis XII under Trémoille.