| HNH Inverness Ltd | Wholesale & retail | 2021 |
| Hogg's Mechelec Ltd | Wholesale & retail | 2026 |
| Hold Fast Maritime Ltd | Professional & scientific | 2023 |
| Holdex L.P. | | 2013 |
| Holdexo Trade L.P. | | 2014 |
| Holiday Homes (Inverness) Ltd | Hospitality | 2023 |
| Holiday Homes INV Ltd | Real estate | 2024 |
| Holm Evangelical Church | Other services | 1996 |
| Holmes Access Ltd | Construction | 2025 |
| Holroyd Commerce L.P. | | 2014 |
| Home & Mortgage Shop Limited | Financial services | 2009 |
| Home Farm Lodges Limited | Hospitality | 2003 |
| Home Surface Repairs Limited | Administrative & support | 2018 |
| Hoosie Ltd | Information & communication | 2022 |
| Hope's Haven Ltd | Hospitality | 2026 |
| Hopeman Christmas Trees Limited | Agriculture & fishing | 2007 |
| Horizon Bookstore Limited | Education | 2024 |
| Horizont Alliance L.P. | | 2015 |
| Hospitality Management Support Ltd | Administrative & support | 2019 |
| Hostella Limited | Hospitality | 2025 |
| Hot Grill (Inverness) Limited | Hospitality | 2020 |
| Hotel in the Skye Limited | Hospitality | 2013 |
| House of Tweed Highland Ltd | Wholesale & retail | 2022 |
| HRI Munro Architecture Ltd | Professional & scientific | 2011 |
| HRI Munro EOT Ltd | Administrative & support | 2025 |
| HRL Scrap & Waste Solutions Ltd. | Administrative & support | 2010 |
| HS OPS 241 Ltd | Hospitality | 2024 |
| HSW Diamond Tools Limited | Manufacturing | 2021 |
| Hugh Allan (Holdings) Limited | Professional & scientific | 1976 |
| Hugh Allan (Properties) Limited | Real estate | 1973 |
| Hugh Macrae & Company (Builders) Limited | Construction | 1965 |
| Hughes & Sons Gardening Ltd | Administrative & support | 2025 |
| Hugo Cobbs Ltd | Hospitality | 2022 |
| Human Safety Matters Limited | Administrative & support | 2019 |
| Humanising Healthcare CIC | Education | 2024 |
| Hunter Landscaping Ltd | Administrative & support | 2015 |
| Huntleigh Limited | Administrative & support | 2018 |
| Husavik Ltd. | Wholesale & retail | 2016 |
| Hydrousel Limited | Administrative & support | 2012 |
| Hygen Controls Ltd | Professional & scientific | 2023 |
| HÅR Salon Ltd | Other services | 2023 |
| I B Quality Services Limited | Professional & scientific | 2007 |
| I J S Transport Limited | Transport & logistics | 2015 |
| I Love AE Limited | Professional & scientific | 2016 |
| I P Utilities & Groundworks Contractor Limited | Professional & scientific | 2015 |
| I R Martin Associates Ltd. | Professional & scientific | 2008 |
| I Renwick Limited | Administrative & support | 2020 |
| I. a. Lamont Ltd | Construction | 2019 |
| I.A.M Farming Ltd | Administrative & support | 2015 |
| Iain Cowie Plant Hire & Groundworks Ltd | Construction | 2014 |
| Iain Mackenzie (Strathpeffer) Ltd. | Construction | 2004 |
| IAL Estate Management Ltd | Other services | 2026 |
| IAN Findlay PFT Ltd | Arts & recreation | 2020 |
| IBI Construction Ltd | Construction | 2020 |
| IBI Holdings Ltd | Financial services | 2019 |
| IBI Joiners Limited | Construction | 2010 |
| IBI Painters Limited | Construction | 2022 |
| Ic&C Ltd | Public administration | 2018 |
| Ice North East Limited | Health & social care | 2026 |
| ICM Electrical Inverness Ltd | Construction | 2014 |
| ICM Properties Scotland Ltd | Real estate | 2021 |
| Icon Laundry Ltd | Other services | 2023 |
| ICR Solutions (Epos) Limited | Wholesale & retail | 2010 |
| ID Mapps Ltd | Professional & scientific | 2018 |
| IDC Electrical (Highland) Ltd | Construction | 2021 |
| IDE8 Limited | Professional & scientific | 2015 |
| IDM (HEB) Specialist Building Services Limited | Construction | 2021 |
| IDM Energy Limited | Professional & scientific | 2021 |
| IDM Group Scotland Limited | Financial services | 2021 |
| IDM Safety Solutions Ltd | Professional & scientific | 2021 |
| Ignition Medical Solutions Ltd | Transport & logistics | 2024 |
| Ihct Ltd | Professional & scientific | 2015 |
| IIC Trading Limited | Hospitality | 2024 |
| IKM Consulting Ltd. | Professional & scientific | 1997 |
| Iliev Ltd | Wholesale & retail | 2025 |
| Imedia Associates Limited | Professional & scientific | 2010 |
| Immersive Vision 360 Ltd | Professional & scientific | 2020 |
| Impera Investment L.P. | | 2014 |
| Implant Options Ltd | Health & social care | 2021 |
| Import L.P. | | 2014 |
| Importa Ventures L.P. | | 2014 |
| Importex L.P. | | 2013 |
| Importica L.P. | | 2014 |
| Importus Alliance L.P. | | 2013 |
| Improve Group Limited | Construction | 2022 |
| IMS Managment Ltd | Real estate | 2025 |
| Imulab Ltd | Health & social care | 2023 |
| IN Business Services Limited | Administrative & support | 2006 |
| Inbhirnisrepairs Limited | Wholesale & retail | 2025 |
| Independent Care Plans U.K. Ltd. | Administrative & support | 1995 |
| Index Alliance LP | | 2016 |
| Indian Stores & More Ltd | Wholesale & retail | 2025 |
| Infinitex L.P. | | 2015 |
| Infinity 360 CAM Hire (Scotland) Ltd | Professional & scientific | 2022 |
| Infinity 365 Competitions Ltd | Arts & recreation | 2024 |
| Inglis Build Ltd | Construction | 2017 |
| Inkhut Studios Ltd | Administrative & support | 2023 |
| Inmara Ltd | Professional & scientific | 2017 |
| Innes & Mackay (Secretaries) Limited | Extraterritorial | 2001 |
| Innes & Mackay (Trustees) Limited | Professional & scientific | 1993 |