John I of Saarbrücken

John I of Saarbrücken (c. 1260–1342) was count of Saarbrücken from 1308, the son of Count Simon IV and Margaret of Broyes. In 1285 he inherited part of the lordship of Commercy from his mother, and from 1297 served the dukes of Lorraine, campaigning in Flanders for France.

He joined King Henry VII's embassy to the papal court at Avignon in 1309 and fought with the emperor's auxiliaries in Italy in 1313, where he was captured. He granted town rights to Saarbrücken in 1322 and Commercy in 1324, and died on 23 January 1342.