Route 108 is a 8.6-mile-long (13.8 km) state highway in Washington County, Rhode Island. The route begins at an intersection with Ocean Road in the village of Narragansett Pier (within the town of Narragansett), just north of Point Judith Light. The route's northern terminus is at an intersection with Route 138 in the town of South Kingstown, just east of the University of Rhode Island. In between, Route 108 connects to the Block Island Sound community of Galilee and passes through the villages of Wakefield and Peace Dale.