UDG
- Darlington County Airport
- List of airports in Armenia
- Muduga language
- Transport standards organisations
- UDG Healthcare
- UG (disambiguation)
- Udege language
- Ultra diffuse galaxy
- University of Donja Gorica
- University of Girona
- University of Granma
- University of Guadalajara
- Uracil-DNA glycosylase
- Urban Design Group