Totten Inlet lies in the southern end of Puget Sound in the U.S. state of Washington. The inlet extends 9 miles (14 km) southwest from the western end of Squaxin Passage, and much of the county line between Mason and Thurston counties runs down the center of it. A spit extends west for about 300 feet (91 m) from Steamboat Island. The inlet shoals gradually to near Burns Point, 100 feet high, on the south shore, where it bares at low tide.