Iona Island is a 556-acre (2.25 km2) island of the Hudson River in the town of Stony Point, New York, on its west bank. The island is located approximately one mile (1.6 km) south of the Bear Mountain Bridge and is separated from the Hudson's western shore by mudflats and freshwater tidal marshes. It is part of Bear Mountain State Park, although it is occasionally listed separately as Iona Island State Park. From 1899 to 1947 the island was used as the Naval Ammunition Depot Iona Island.

Stony Point is a town in Rockland County, New York, United States. It is part of the New York City Metropolitan Area. The town is located north of the town of Haverstraw, east and south of Orange County, and west of the Hudson River and Westchester County. The population was 14,813 at the 2020 census. The name of the town is derived from a prominent projection into the Hudson River.