Firma U - Mandal
- Urvikodden AS
- Ugle AS
- Ufredsundsholmen
- UK Ungdomsbedrift
- Ulven Innovations AS
- Udø invest AS
- Udø fisk AS
- Unicon Avd. Mandal
- Umoe Mandal AS
- U9q Floors AS
- Uab Maling Erfaring NUF
- Umoe Mandal eiendom AS
- Umoe Advanced Composites AS
- Underwater lighting solutions AS
- Uno-X Mandal
- U9q Silje Jacinta Spirea
- Up Drone service Studentbedrift
- Umami - Linda Merete Skaar
- Uzina Emilia Alexina Charif Klev
- Unique import Maria T G Helgeland