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:
This article about a member of the German nobility is a stub.