A screw sloop is a propeller-driven sloop-of-war. In the 19th century, during the introduction of the steam engine, ships driven by propellers were differentiated from those driven by paddle-wheels by referring to the ship's screws (propellers). Other propeller-driven warships included screw frigates and screw corvettes.
- CSS Alabama
- USS Wyoming
- HMS Gannet, now a museum ship.
- USS Housatonic, sunk by the first successful submarine attack.