Bedrift I - Tiller
- Ice ANS
- IPAS AS
- Invest42 AS
- Invacare AS
- Ilsvikparken AS
- Invacare AS
- Itelsec
- Ihole AS
- Itnologi DA
- Industrigjerder AS
- Ips AS
- Isoteam Åsmul
- Info-regnskap AS
- Ifelo Instituttet
- Imj-Invest AS
- Imperium-Ungdomsbedrift
- Inger Lande
- Ingeborg Hov
- IcopalTak AS Avd Trondheim
- IcoptalTak Avd Trøndelag
- Impulse Treningssenter
- Iselinn Nilsen
- Integra Trondheim
- Ivan Pongracic
- Integra Trondheim
- Infraconstruct Design AS
- Ingebrigtsen Analyse
- Ips Trondheim AS
- Infinitum AS Avd Trondheim
- Ips Eiendom AS
- Ips Norway AS
- IPS Trondheim AS
- Infotek Arvid Aakre
- Iver Daaland Åse
- Inger Kathrine Dyrendahl
- Ivar Lykkesvei 10 AS
- Intersport City syd AS
- Impulse Trekanten Treningssenter
- Intersport Trondheim - Tiller
- Ivar Larsen Konsult
- Ida Regine Brissach
- If Uni Assuranse
- Intersport Trondheim - City syd
- Ingvald Ystgaards veg 17 AS
- Insight Bygg Eriksen Sanchez
- Intersport Trondheim Avd City syd
- InfoCare Norge AS Professional Service
- Insider Facility Solutions AS Trondheim
- Internasjonelle Forening for Frihet
- Ingvald Ystgaards veg 17 Eiendom AS
- Ir Tae Kwon Do Tong
- ISS Facility Services AS Avd 423017 Transportsentralen
- I Bruk , reserve Tommy Skaanes
- Ivar Lykkes vei Fysioterapi & Manuellter
- ISS Facility Services AS Avd 423037 Wist Mr
- Ikke Rør Abo for Å Holde Ban oppe.