The UNSC sloop is a class of United Nations Space Command starship classification. Sloops refer to warships that are between a UNSC corvette and UNSC frigate in size. Sloops are known to carry one Archer Missile each, and have stealth capabilities.
- UNSC Walk of Shame - A UNSC Naval Intelligence sloop that saw service during the First Battle of Harvest.
- Halo: Contact Harvest (First appearance)