Object class
- Unicorns2 objects
- United States dollar (system of money)167 objects
- Unmodified stone2 objects
- Upper Acheulean95 objects
- Upper Gila (Highland Salado) pottery tradition (1150–1450 AD)54 objects
- Ushabti69 objects
- Utah Desert Gray Ware13 objects
- Utensils for consuming food127 objects
- Utensils for serving food324 objects
- Utukemas25 objects
- Utuviyas (felling axes)13 objects