Bedrift I - Namsos
- Inam AS
- Inspira AS
- Industrivarer AS
- Industrivarer AS
- Invisibilia
- Irmis AS
- Innsatsteam
- Ingars Veckalnins
- Isomax Energi AS
- Imidt Management AS
- Imidt Økonomi AS
- IT Partner
- iteam Namsos
- Ida Sklet
- Isomax Energi AS
- Innbyggertorg Namsos
- Industrihallene Eiendom AS
- Iteam 18 AS
- Inatur Norge AS
- Ingunns Villagalleria AS
- Ilrøs Holding AS
- Igor Repilenko
- Inge Kristiansen
- Inge Kristiansen
- Isal Invest AS
- Invest Gruppen AS
- Iver Skilhagen Bruun
- Inatur Norge AS Avd Namsos
- Ingebretsen Ragnar Andreas
- Iogt Område Namdal
- Indre Lissfjellvegen Velforening
- Indre Lissfjellvegen Velforening
- Influencer Sandra Andersen
- In-Vino Veritas AS
- In-Bo Holding AS
- Ivar Andreas Sellæg Asbøll
- ISS Service Management AS Avd Renhold Namsos
- ISS Facility Services AS Avd Renhold Namsos
- IT-Konsulent Jørgen Skaret Barsøe
- IKT Kurs og Rådgivning Cato Berg