The town of Watervliet ( or ) was a town that at its height encompassed most of present-day Albany County and most of the current town of Niskayuna in neighboring Schenectady County, in the state of New York, United States. Just prior to its dissolution, the town encompassed the current towns of Colonie and Green Island and the city of Watervliet.
The former town of Watervliet was more than twice as big in area as the current city of Watervliet. 