Tiverton is a town in Newport County, Rhode Island, United States. The population was 15,780 at the 2010 census.
Tiverton is located on the eastern shore of Narragansett Bay, across the Sakonnet River from Aquidneck Island (also known as the Island of Rhode Island). Together with the adjacent town of Little Compton, the area is disconnected from the rest of the state of Rhode Island. The northern portion of the town is located on Mount Hope Bay.
Tiverton is located west of the town of Westport and south of the city of Fall River located in Massachusetts. Much of the town is located along a granite ridge which runs in a north-south direction, rising approximately 170 feet in elevation from the bay. A large section of exposed granite can be observed at the highway cut for Route 24, near the Main Road interchange.