The Jacob Leisler Institute for the Study of Early New York History is an independent, not-for-profit study and research center devoted to collecting, preserving, and disseminating information relating to the life of Jacob Leisler (1640–1690), his immediate family, and the people, culture, and history of colonial New York under English rule between 1664 and 1773.

The Institute contains a collection of original, digital, and/or paper copies of primary source manuscripts, books, maps, and illustrative materials, as well as a library of secondary resources that provide scholarly context to the primary sources.

The Jacob Leisler Institute is an open resource for both scholars and the interested public.