Firma U - Drøbak
- Uteanlegg AS
- Unoflow AS
- Ulle Holding AS
- Ultimat Artist AS
- Unrigged Games AS
- Ur kompetanse AS
- Ullerud barnehage
- Ullerud barnehage
- Ullerud Helsebygg
- Ubuntu Impact AS
- Urp invest AS
- Urban products AS
- Ullerudfaret Vel
- Ullerudhellinga velforening
- Ullerudkroken velforening
- Utleie Bakkelund
- USBL eiendom AS
- Utdanningsforbundet Frogn
- Umi eiendom AS
- Ulen Management
- Ullerudbakken 31 AS
- Universitetets Marinbiologisk Feltstasjon
- Universitetets Marinbiologisk Feltstasjon
- Ullerud terasse Vel
- Ullerudskogen hageby Grendalag
- Urmaker Christian Ilmo
- Ulf Bjerknes consulting UBC
- Unique frisør Joanna Janiszewska
- Uno-X Drøbak City
- Uno-X Drøbak (7-Eleven)