| Galca-Shell Limited | Agriculture & fishing | 2005 |
| Galion Catering Ltd | Hospitality | 2020 |
| Gallanach Marine Consultants Limited | Transport & logistics | 2023 |
| Galushky Ltd | Hospitality | 2024 |
| Ganavan Limited | Construction | 2023 |
| Gavin Maccoll Builders Limited | Construction | 2024 |
| Gearcourt Limited | Wholesale & retail | 2023 |
| George MAC Services Limited | Professional & scientific | 2021 |
| Gfmj Developments Limited | Construction | 2026 |
| GH Groundworks & Plant Hire Ltd | Construction | 2020 |
| Gifts Connection Ltd | Wholesale & retail | 2017 |
| Gillies Timber Limited | Agriculture & fishing | 2011 |
| Gilroy Fishing Limited | Agriculture & fishing | 2022 |
| Girl Jean Direct Shellfish Limited | Agriculture & fishing | 2023 |
| Glassmasterer Limited | Arts & recreation | 2018 |
| Glen Nevis Apartment Limited | Hospitality | 2022 |
| Glen ROY Hospitality Ltd | Hospitality | 2026 |
| Glen ROY Hospitality Properties Ltd | Real estate | 2026 |
| Glencoe Shellfish Limited | Agriculture & fishing | 2016 |
| Glengarry and District Community Association | Administrative & support | 2004 |
| Glenmore Outdoor Limited | Real estate | 2003 |
| Glenmore Woodlands Limited | Wholesale & retail | 2025 |
| Glycomar Limited | Administrative & support | 2005 |
| GM Properties & Lettings Ltd | Real estate | 2023 |
| Go Naked VEG Ltd | Wholesale & retail | 2020 |
| Gordon & Strathern Ltd | Construction | 2012 |
| Gordon George Construction Services Limited | Construction | 2008 |
| GPM Engineering Services Ltd | Professional & scientific | 2025 |
| Grampian Light Industries Limited | Real estate | 1953 |
| Gray Hodge Limited | Real estate | 2024 |
| Green Door Property (Scotland) Ltd | Real estate | 2023 |
| Gregor Morawski Building Contractor Ltd | Construction | 2019 |
| Groveden Limited | Real estate | 2022 |
| GRS Trade Centre Ltd. | Wholesale & retail | 2015 |
| GSS Electrical (Scotland) Limited | Construction | 2018 |
| Gunpowder Cafe Limited | Hospitality | 2023 |
| HAL Maccoll Builders Ltd | Construction | 2026 |
| Hamill Site Management Services Ltd | Construction | 2023 |
| Hamish Hoey & SON Ltd | Construction | 2011 |
| Hampton Marine Consultancy Ltd | Transport & logistics | 2022 |
| Harbour Lights | | 1992 |
| Harbour Nail and Spa VP Limited | Other services | 2024 |
| Harbour Path Marine Ltd | Transport & logistics | 2026 |
| Harris Tweed BAG Company Ltd | Wholesale & retail | 2020 |
| Harris Tweed Carloway Mill Ltd | Wholesale & retail | 2022 |
| Harris Tweed CLO Limited | Wholesale & retail | 2022 |
| Harris Tweed Oban Ltd | Wholesale & retail | 2020 |
| Harris Tweed Scotland Ltd | Wholesale & retail | 2020 |
| Hawthorn Holidays and Horizons Limited | Hospitality | 2025 |
| Hazcam Limited | Hospitality | 2017 |
| Hazelbank Motors Limited | Wholesale & retail | 1974 |
| Healey Properties (Oban) Limited | Real estate | 2024 |
| Hebridean Horizons Yacht Charter Ltd | Transport & logistics | 2025 |
| Hebridean Maintenance Ltd | Construction | 2026 |
| Hebridean Property Limited | Construction | 2025 |
| Herez Ltd | Hospitality | 2016 |
| Hidden Hand AI Ltd | Professional & scientific | 2025 |
| Highland Apartments (Oban) Limited | Real estate | 2015 |
| Highland Fasteners Limited | Wholesale & retail | 2010 |
| Highland Ferries Limited | Transport & logistics | 2017 |
| Highland Fold Ltd | Hospitality | 2021 |
| Highland Hardscapes Ltd | Administrative & support | 2022 |
| Highland Rose Plumbing and Heating Limited | Manufacturing | 2016 |
| Highland Satchel BAG and Luggage Company Ltd | Wholesale & retail | 2021 |
| Highland Water Works Limited | Administrative & support | 2012 |
| Hinba Coffee Shop Ltd | Hospitality | 2020 |
| Hinba Ltd | Manufacturing | 2019 |
| Hinbagla Ltd | Hospitality | 2022 |
| Home-Start Lorn | Health & social care | 2005 |
| Homestay Holidays Limited | Hospitality | 2018 |
| Hope to Oban | Other services | 2003 |
| Horse Anarchy Ltd | Information & communication | 2022 |
| Hostloop Ltd | Information & communication | 2025 |
| Howlin' Fling Limited | Arts & recreation | 2018 |
| Huid Ltd | Manufacturing | 2021 |
| Humphries & Odoom Energy Assessors Ltd | Administrative & support | 2023 |
| Hydro Maintenance Ltd | Construction | 2025 |
| I Miles Contracting Ltd | Construction | 2015 |
| I&B K Holdings Limited | Financial services | 2025 |
| Iain Harris and Sons Ltd | Construction | 2011 |
| ICD Contracting Ltd | Agriculture & fishing | 2010 |
| Iggy Grill Limited | Hospitality | 2025 |
| IMI Offshore Lifting Ltd | Mining & quarrying | 2025 |
| Imperial Laundry Limited | Other services | 2014 |
| Infinivio Resources Ltd | Professional & scientific | 2025 |
| Inkster Product Design Ltd | Professional & scientific | 2022 |
| Inplr Properties Limited | Real estate | 2026 |
| Intrabiz Scaffolding Limited | Construction | 2010 |
| Inveran Fishing Limited | Agriculture & fishing | 2011 |
| Inverness Medical Cosmetic Clinic Limited | Health & social care | 2020 |
| Inverness Tyre Services Ltd. | Wholesale & retail | 2000 |
| IP Traders Ltd | Construction | 2020 |
| Island Retreats Limited | Hospitality | 2001 |
| Islander Direct Shellfish Limited | Agriculture & fishing | 2023 |
| Isle of Luing Community Trust | Arts & recreation | 2005 |
| Isle of Luing Trading Company Limited | Mining & quarrying | 2005 |
| Isle of Mull Chocolate Ltd | Manufacturing | 2017 |
| Isle of Mull Cottages Limited | Administrative & support | 2014 |
| J & a Builders (Argyll) Limited | Construction | 2023 |
| J & a Marley Services Limited | Health & social care | 2022 |