Robert III of Artois was a French nobleman of the House of Artois. He was the Lord of Conches-en-Ouche, of Domfront, and of Mehun-sur-Yèvre, and in 1309 he received as appanage the county of Beaumont-le-Roger in restitution for the County of Artois, which he claimed. He was also briefly Earl of Richmond in 1341 after the death of John III, Duke of Brittany.

The County of Artois was a historic province of the Kingdom of France, held by the Dukes of Burgundy from 1384 until 1477/82, and a state of the Holy Roman Empire from 1493 until 1659.