USS Sparrow II (SP-3231) was a United States Navy patrol vessel in commission from 1918 to 1919. Sparrow II was built as a civilian motorboat of the same name in 1915 by the Charles Rhode & Sons Company at Baltimore, Maryland. In mid-September 1918, the U.S. Navy acquired her from her owner, the Sparrows Point Steel Company of Baltimore, for use as a section patrol boat during World War I. She was commissioned as USS Sparrow II (SP-3231) on 25 September 1918. Assigned to the 5th Naval District, Sparrow II patrolled the coasts of Maryland and Virginia for the rest of World War I and into 1919.