| John II | |
| Reign: | 1429–1472 |
| House: | Nassau-Saarbrücken |
| Predecessor: | Philipp I of Nassau-Weilburg |
| Successor: | John Louis, Count of Nassau-Saarbrücken |
| Father: | Philipp I of Nassau-Weilburg |
| Mother: | Elisabeth of Lorraine-Vaudémont |
| Spouse: | Johanna of Loon Elisabeth of Württemberg-Urach |
| Birth Date: | 4 April 1423 |
| Birth Place: | Saarbrücken |
| Death Place: | Vehingen |
John II of Nassau-Saarbrücken (4 April 1423, in Saarbrücken – 15 July 1472, in Vehingen) was a son of Philipp I, Count of Nassau-Weilburg and Elisabeth of Lorraine-Vaudémont. He was Count of Nassau-Saarbrücken from 1429 to 1472.
He married Johanna (1443–1469), a daughter of John IV of Loon.
After Johanna's death, he married Elisabeth, the daughter of Count Louis I of Württemberg-Urach. With her, he had a son: