Fort Johnson (formerly known as Akin) is a hamlet and former village in Montgomery County, New York, United States located on the north side of the Mohawk River in the town of Amsterdam.

Most were working in an English camp along the Hudson to pay back their passage by ship from London.

In 1716, the Mohawk sold a portion of the land to Philip Groat (it is now in the eastern part of the Town of Amsterdam).

In 1739, William Johnson, an influential Anglo-Irish colonist who had previously lived closer to Amsterdam, purchased land including the site of the village.

The community was the original seat of power of William Johnson before he moved on to found the City of Johnstown further west.

He rose to become the British Superintendent of Indian Affairs in the northern colonies and was highly influential because of his strong relationships with the Iroquois, especially the Mohawk.

The village is on the north bank of the Mohawk River at the influx of the Kayaderosseras Creek [of Montgomery County].