|Intro||Count of Nassau-Vianden-Dietz, Lord of Breda and Stadtholder of Guelders and Zutphen|
|A.K.A.||Jean v de nassau-dillenbourg, Jean V De Nassau-Dillenbourg|
|Death||30 July 1516 (Dillenburg)|
Johann V of Nassau-Vianden-Dietz (Breda, 9 November 1455 – Dillenburg, 30 July 1516) was count of Nassau (in Siegen, Dillenburg, Hadamar and Herborn), Vianden and Diez, and Lord of Breda. He was the paternal grandfather of William the Silent.
He was the son of Jan IV of Nassau and his wife Maria of Loon-Heinsberg.
Johann V was in 1504 and 1505 stadtholder of Guelders and Zutphen. In 1504, he inherited Breda and Vianden from his brother Engelbrecht II of Nassau.
Johann V married in 1482 to Elisabeth of Hesse-Marburg, a daughter of Henry III, Landgrave of Upper Hesse and his wife Anna of Katzenelnbogen. They had 6 children:
- Henry III of Nassau-Breda (1483–1538)
- Johann of Nassau-Vianden-Dietz (1484–1504)
- Ernst (1486)
- William I, Count of Nassau-Dillenburg (1487–1559), father of William the Silent.
- Elisabeth of Nassau (1488–1559)
- Maria of Nassau (1491–1547)
Count Johann V was buried at Siegen.
His Dutch possessions went to his eldest son Henry, his German possessions to his other son William.