MV Ulysses is a RORO car ferry currently owned and operated by Irish Ferries. The ship was launched on 1 September 2000 at Aker Finnyards shipyard in Rauma, Finland and services the Dublin–Holyhead route.

Roll-on/roll-off ships are cargo ships designed to carry wheeled cargo, such as cars, motorcycles, trucks, semi-trailer trucks, buses, trailers, and railroad cars, that are driven on and off the ship on their own wheels or using a platform vehicle, such as a self-propelled modular transporter. This is in contrast to lift-on/lift-off (LoLo) vessels, which use a crane to load and unload cargo.