| Hayz Vape Ltd | Wholesale & retail | 2019 |
| Hb&S Supply Co Ltd | Wholesale & retail | 2026 |
| HBR Pharma Ltd | Health & social care | 2024 |
| HD INK Tattoos Ltd | Other services | 2020 |
| Healthcare Europe (Marine) Limited | Health & social care | 2012 |
| Healthlinked Ltd | Health & social care | 2014 |
| Healy on Homes Ltd | Construction | 2011 |
| Heart to Hands Healthcare Services Limited | Health & social care | 2025 |
| Heartlands Smart Repairs Ltd | Wholesale & retail | 2023 |
| Heartlands Studios Ltd | Information & communication | 2020 |
| Heartwood Property Holdings Ltd | Real estate | 2026 |
| Hebe's Hot Food Limited | Hospitality | 2019 |
| Hedgerow Farm Limited | Agriculture & fishing | 2011 |
| Hephzibah Consulting Limited | Transport & logistics | 2019 |
| Heritage Holdings Scotland Limited | Other services | 2021 |
| Heritage Renovation Scotland Ltd | Construction | 2024 |
| Herning Wind Limited | Professional & scientific | 2022 |
| Heyns Enterprise Ltd | Wholesale & retail | 2023 |
| Hi-Q (Edinburgh) Ltd | Construction | 2023 |
| Hidden Power Ltd | Wholesale & retail | 2025 |
| High Spec Spraying Ltd | Manufacturing | 2025 |
| High Voltage Design and Consulting Limited | Professional & scientific | 2025 |
| Higher Level Martial Arts Ltd | Arts & recreation | 2020 |
| Hilditch Inns (Linlithgow) Limited | Hospitality | 2012 |
| Hilditch Inns Limited | Hospitality | 2002 |
| Hilltop Animal and Farm Supplies Ltd | Wholesale & retail | 2020 |
| Himanshi Limited | Hospitality | 2022 |
| HME Petroleum Ltd | Wholesale & retail | 2025 |
| HME23 Ltd | Wholesale & retail | 2024 |
| HML Success Ltd | Other services | 2022 |
| HMW Autocare Ltd | Wholesale & retail | 2024 |
| HMW Couriers Ltd | Transport & logistics | 2025 |
| Hollywood Burgers & Shakes Holdings Limited | Administrative & support | 2025 |
| Homeaid West Lothian Ltd | Health & social care | 2010 |
| Homestore Online Ltd | Wholesale & retail | 2017 |
| Honeyman Honey Ltd | Households | 2025 |
| Hope Full Wellbeing Scotland Community Interest Company | Education | 2026 |
| Hopefield Grocers Limited | Wholesale & retail | 2023 |
| Hopefield Motors Limited | Transport & logistics | 2017 |
| Horizon Operations Limited | Professional & scientific | 2025 |
| Horse Mill Holdings Ltd | Real estate | 2015 |
| Hot Igloo Productions Limited | Information & communication | 2004 |
| Hotels Direct Consulting Services Ltd | Wholesale & retail | 2025 |
| Hound Town Dog Grooming Ltd | Other services | 2025 |
| House of Van Gough Ltd | Wholesale & retail | 2024 |
| Hoyaan Express PVT Ltd | Hospitality | 2026 |
| Hristoff Ltd | Transport & logistics | 2019 |
| HRS Cars Ltd | Wholesale & retail | 2024 |
| HU Empire Ltd | Manufacturing | 2024 |
| HU Trade PVT Ltd | Wholesale & retail | 2025 |
| HUE & Co Design Ltd | Construction | 2025 |
| Huff N Puff Lounge Ltd | Wholesale & retail | 2019 |
| Hugh Black & Sons Limited | Wholesale & retail | 1987 |
| Hunter & Edgar Limited | Construction | 2015 |
| Husky Petroleum Ltd | Wholesale & retail | 2021 |
| Hygen Group Ltd | Wholesale & retail | 2025 |
| I AM Loud CIC | Arts & recreation | 2023 |
| I W Roofing & Building Ltd | Construction | 2024 |
| IAF Properties Ltd | Real estate | 2023 |
| Icare Headstones Limited | Administrative & support | 2017 |
| Icare Memorials Ltd | Other services | 2020 |
| Icare Pet Crem Ltd | Administrative & support | 2017 |
| Iconic Construction Solutions Ltd | Construction | 2020 |
| Icons in Sport Ltd | Wholesale & retail | 2025 |
| Icourier Pro Ltd | Transport & logistics | 2026 |
| Ideo Business Services Ltd | Professional & scientific | 2011 |
| IF Construction Ltd | Construction | 2026 |
| Ihor Martyniv Limited | Transport & logistics | 2026 |
| Images Face and Body Studio Ltd. | Other services | 2011 |
| Improving Learning Ltd | Education | 2015 |
| Improving Lettings LLP | | 2023 |
| Improving Travel Ltd | Administrative & support | 2026 |
| Inchcross Property Ltd | Real estate | 2025 |
| Inchyra Grange Hotel Limited | Professional & scientific | 1976 |
| Inchyra Services Limited | Professional & scientific | 1982 |
| Independent Commercial Solutions Limited | Professional & scientific | 2019 |
| Inferno Ignite Ltd | Other services | 2026 |
| INFINITE24 Ltd | Health & social care | 2023 |
| Infinitepro Ltd | Wholesale & retail | 2016 |
| Infinity Software Limited | Information & communication | 2017 |
| INK Magic DTF Prints Limited | Manufacturing | 2024 |
| Innovative Fullstack Solutions Limited | Information & communication | 2018 |
| Innovexa Limited | Information & communication | 2025 |
| Integribite Ltd | Professional & scientific | 2025 |
| Integrity Nexus Ltd | Information & communication | 2025 |
| Intense Enterprises Ltd | Wholesale & retail | 2025 |
| Intercity Transport Services Ltd | Transport & logistics | 2026 |
| Interdisciplinary Coordination Limited | Professional & scientific | 2022 |
| Internet Light Industries Ltd | Information & communication | 2010 |
| Intuitive Psychology Ltd | Education | 2023 |
| IPG Logistics Kinross Ltd | Transport & logistics | 2023 |
| IPS Real Estate Ltd | Real estate | 2025 |
| Iron MAN Design & Manufacturing Limited | Manufacturing | 2004 |
| Ironmongery Plus Ltd | Wholesale & retail | 2017 |
| Irvine Container Storage Ltd | Transport & logistics | 2022 |
| ISD Bathgate Ltd | Construction | 2023 |
| Ishca Design Ltd | Wholesale & retail | 2018 |
| Ishca Ltd | Construction | 2022 |
| Isomer Consultancy Ltd | Professional & scientific | 2023 |
| Iwaju Property Solutions Limited | Real estate | 2024 |