Template:Wp-John I, Count of Nassau-Weilburg

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John I of Nassau-Weilburg (1309–1371) was Count of Nassau-Weilburg from 1355 to 1371.

John I was the second son of Count Gerlach I of Nassau-Wiesbaden and Agnes of Hesse, granddaughter of Henry I, Landgrave of Hesse. On Gerlach I abdication in 1346, John and his brothers divided the family lands. John acquired Weilburg on the Lahn.

John was elevated by Emperor Charles IV in 1366 to Imperial Count. He died on September 20, 1371.