Van Rensselaer Island was an island in the Hudson River opposite the city of Albany, New York. The island was also known as de Laet's Island, Kalebacker's Island, Boston Island and B&A Island, the last two names in reference to the Boston and Albany Railroad. The island stretched from Mill Creek north to the Livingston Avenue Bridge. Van Rensselaer Island is now connected to the City of Rensselaer, and is no longer an island. Van Rensselaer Island was also a name given to Westerlo Island in Albany, today the Port of Albany-Rensselaer.