Zavikon Island refers to either the larger or the pair of islands in the Thousand Islands archipelago on the St. Lawrence River between New York and Ontario, two kilometres southeast of Rockport, Ontario and about 200 meters north of the international boundary.
Zavikon Island probably has the smallest international bridge in the world. It is only thirty-two feet long and connects a Canadian island and an American island. The boundary agreement in 1793 between the American and Canadian governments decided that no island would be split in two. Two-thirds of the islands are in Canadian territory, but the total area of the Canadian and American islands is roughly equal.