| Johannetta of Sayn-Wittgenstein | |
|---|---|
| Spouse(s) | John VI, Count of Nassau-Dillenburg |
| Noble family | House of Sayn |
| Father | Louis I, Count of Sayn-Wittgenstein |
| Mother | Anna of Solms-Braunfels |
| Born | 15 February 1561 |
| Died | 13 April 1622 (aged 61) |
Johanetta of Sayn-Wittgenstein (15 February 1561 – 13 April 1622) was a daughter of Count Louis I of Sayn-Wittgenstein and his first wife, Anna of Solms-Braunfels, who was a sister of Amalia of Solms-Braunfels.
Johanetta was the third wife of Count John VI of Nassau-Dillenburg, a son of William the Rich and Juliana of Stolberg. John and Johanetta married on 14 June 1586 and had the following children: