Diether of Nassau, German: Diether von Nassau 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.
- Occupation
- Catholic priest
- Position held
- Roman Catholic Archbishop of Trier, archbishop
- Born
- 1250, 1260
- Died
- November 23, 1307
