Other
- Underoath, an American Christian metalcore band from Tampa, Florida
- Urge Overkill, an alternative rock band, formed in Chicago, United States
- Unexploded ordnance, explosive weapons that did not explode when they were employed
- Urate oxidase, an enzyme that catalyzes the oxidation of uric acid to 5-hydroxyisourate
Read more about this topic: UO