USCGC Dexter, was a steel-hulled patrol boat of the United States Coast Guard in commission from 1925 to 1936. She was the third ship of the United States Revenue Cutter Service and United States Coast Guard to bear the name. Dexter was built by the Defoe Boat and Motor Works at Bay City, Michigan. She was commissioned into the Coast Guard in 1925. Dexter was stationed at Boston, Massachusetts, from 1925 until 1927. She was then transferred to Pascagoula, Mississippi late in 1927. By 1935 she had been transferred to Buffalo, New York.