Gerlach II, Count of Nassau-Wiesbaden

Gerlach II, Count of Nassau-Wiesbaden (1333–1386) was the eldest son of Adolph I, Count of Nassau-Wiesbaden-Idstein and his wife Margaret of Nuremberg. When his father died in 1370, he inherited Nassau-Wiesbaden.

He married Agnes, a daughter of Henry II of Veldenz. The marriage remained childless. After his death, his younger brother, Walram IV, inherited Wiesbaden.