Diether III | |
|---|---|
| Archbishop and Elector of Trier | |
| Church | Catholic Church |
| Diocese | Archdiocese of Trier |
| In office | 1300–1307 |
| Predecessor | Bohemond I of Warnesberg |
| Successor | Baldwin of Luxembourg |
| Personal details | |
| Born | c. 1250 |
| Died | 23 November 1307 Trier |
Diether of Nassau, German: Diether von Nassau (c. 1250[1][2] – Trier, 23 November 1307)[1][3][4][5] was a clergyman from the Walramian branch of the House of Nassau. From 1300 to 1307 he was Archbishop and Elector of Trier as Diether III.