John III, Count of Nassau-Beilstein
John III, Count of Nassau-Beilstein was a son of John II and his wife Maria of Solms-Braunfels.
In 1513, he succeeded his father as Count of Nassau-Beilstein. In 1523, he married Anna, a daughter of Louis I of Nassau-Weilburg and Margaret of Nassau-Wiesbaden.
He died on 11 December 1561. As he had no male heir, Nassau-Beilstein fell back to Nassau-Dillenburg.
