Louis I, Count of Nassau-Weilburg

Count Louis I of Nassau-Weilburg (1473 – 28 May 1523) was a son of Count John III of Nassau-Weilburg and his wife, Elisabeth of Hesse. In 1492, Louis I succeeded his grandfather Philip II as Count of Nassau-Weilburg, because his father had already died in 1480.

In 1502, Louis I married Margaret (1487–1548), a daughter of Adolf III of Nassau-Wiesbaden-Idstein and Margarethe von Hanau-Lichtenberg. Louis and Margaret had the following children:
 * Philip III (1504–1559)
 * Anna (1505–1564), married in 1523 to John III, Count of Nassau-Beilstein
 * Louis (1507-1507)
 * Louis (1508–1510)
 * Elisabeth
 * John