Eric I of Saxe-Lauenburg

Eric I of Saxe-Lauenburg (c. 1280–1360) was an Ascanian duke, the second son of Duke John I of Saxony and Ingeborg. When John I abdicated in 1282, Eric and his brothers succeeded under their uncle Albert II's guardianship, and Saxony was partitioned into Saxe-Lauenburg and Saxe-Wittenberg in 1296.

Eric held Bergedorf and Lauenburg, inherited his brother Albert III's Ratzeburg share after 1308, and ceded Bergedorf to John II in 1321. About 1317 he married Elisabeth of Pomerania. He abdicated in 1338 for his son Eric II and died in exile at Nienburg in 1360.