The name Fort Nassau was used by the Dutch in the 17th century for several fortifications, mostly trading stations, named for the House of Orange-Nassau. They included:
Fort Nassau (Netherlands) at Aardenburg in Zeeland, originally named Fort Nieuw Terhofstede, together with the inevitable Fort Oranje constructed in 1621-1622
Old Nassau Fort in The Bahamas, under British control, which played a small part in a naval action and amphibious landing during the American Revolutionary War in 1776
Fort Nassau, Banda Islands, on the island of Bandaneira, constructed in 1609
Fort Nassau (Curaçao), built in 1797 on the island of Curaçao near Willemstad, later converted to a restaurant
Fort Nassau (North River) established 1614 in Albany, New York for the Indian trade, later replaced by Fort Orange
Fort Nassau (South River) established 1627 at Big Timber Creek at Gloucester City, New Jersey
Fort Nassau (Ghana), established near Mori (probably in the late sixteenth or early seventeenth century), later used for the slave trade
Fort Nassau (Senegal), Senegal, along with Fort Oranje constructed on an island purchased from the head of a local tribe
Fort Nassau (Guyana), on the Berbice River
