|Birth||1 January 1362|
|Death||12 June 1420|
Adolf, Count of Nassau-Dillenburg (1362–1420) was a son of Count John I, Count of Nassau-Dillenburg and Margareta of the Marck.
After the death of his father, Count John I, in 1416 the lands were not divided, but instead overseen by the four brothers Adolf, John II, Engelbert I and John III.
Adolf ruled over Dietz, together with his father-in-law. After the death of Adolf of Nassau, his son-in-law Godfrey of Eppstein inherited Dietz and a part of the lands of Nassau.
Adolf of Nassau married Jutta of Dietz, daughter of Gerhard VII Count of Dietz, in 1376. They had one daughter:
- Jutta of Nassau, who married Godfrey of Eppstein.