Fort Orleans (sometimes referred to Fort D'Orleans) was a French fort in colonial North America, the first fort built by any European forces on the Missouri River. It was built near the mouth of the Grand River near present-day Brunswick. Intended to be the linchpin in the vast New France empire stretching from Montreal to New Mexico, the fort was occupied from 1723–1726. It was the first multi-year European settlement in what is today the U.S.