The Caleb Smith State Park Preserve is a state natural preservation and recreational facility in Smithtown, New York.

Designed as a passive use recreational site, the Caleb Smith State Park Preserve features local wildlife and native vegetation in its natural state devoid of other human development or disturbance. This makes the park an appropriate location for those who wish to get away from the normal circumstances of city living and walk through a carefully preserved natural area.

As such, the Caleb Smith State Park has several restrictions on visitor activities. For example, pets, bikes and picnics, are not allowed in the park area. The popular activities in the park include a nature museum, hiking trails, nature programs for children, wildlife viewing, and cross country skiing during the winter months.