Baldwin of Luxembourg (German: Balduin von Luxemburg) (c. 1285 - 21 January 1354) was the Archbishop of Trier from 1307 until 1354, (as Baldwin III) the administrator of the Archbishopric of Mainz from 1328 until 1336, and the administrator of the Bishoprics of Worms and Speyer from 1331 until 1337. Baldwin is considered to be the greatest of all the Prince-Bishops of Trier. Baldwin died in a cell of the Abbey of the Karthäuser in Trier in 1354, and was buried in the west choir of the cathedral in Trier.