| Hotcovers Pro Audio Limited | Wholesale & retail | 2015 |
| House FIX (Scotland) Limited | Construction | 2005 |
| House of Contour Academy by Natalie Kelso Ltd | Other services | 2025 |
| Houston & Mclaughlan Holdings Limited | Financial services | 2024 |
| Houston Combat & Fitness Limited | Health & social care | 2026 |
| Howe Stadia Safety Consultancy Ltd | Arts & recreation | 2011 |
| Howieson of Newmains Investor Limited | Financial services | 2021 |
| Howieson of Newmains Limited | Wholesale & retail | 2003 |
| HSL Compliance (Scotland) Ltd | Professional & scientific | 1999 |
| Hughes Plumbing and Heating (Scotland) Ltd | Construction | 2024 |
| I'M Sparkling.. Cleaning &Ironing Services Ltd | Administrative & support | 2024 |
| I.J.C. Marine/Offshore Consultancy Ltd | Professional & scientific | 2018 |
| I.N.I. Enterprises Ltd. | Real estate | 1999 |
| I.T.B. Recovery Ltd | Wholesale & retail | 2023 |
| IC Property Maintenance Limited | Construction | 2025 |
| Icarus Investments Limited | Financial services | 2010 |
| Iclad Design Limited | Professional & scientific | 2010 |
| Icon Trade UK Ltd | Wholesale & retail | 2019 |
| Icons Hair Lounge Limited | Other services | 2026 |
| IK at Art Productions Ltd | Other services | 2016 |
| Immortal Fitness CIC | Arts & recreation | 2025 |
| Imperial 121 Ltd | Hospitality | 2012 |
| Improvise Care Ltd | Health & social care | 2025 |
| IN Locums Ltd | Health & social care | 2021 |
| IN2 Holding Ltd | Financial services | 2025 |
| Ingenuity (Scot) Ltd | Wholesale & retail | 2020 |
| Inside the Ropes Limited | Arts & recreation | 2016 |
| Interactiv Limited | Information & communication | 2023 |
| IQR Tech & Graphics Limited | Information & communication | 2025 |
| Islay Frigate Hotel Limited | Hospitality | 2023 |
| Ivanhoe Systems Limited | Information & communication | 2005 |
| Izabela Stepien Interior Design Limited | Professional & scientific | 2015 |
| Izzy-Melo Ltd | Health & social care | 2022 |
| J Hayes Properties Limited | Real estate | 2010 |
| J M Parcels Ltd | Transport & logistics | 2016 |
| J M Products Limited | Wholesale & retail | 2004 |
| J M Publicans Ltd | Hospitality | 2025 |
| J Rooney Joinery Ltd | Construction | 2022 |
| J Thomson Fibre Ltd | Information & communication | 2025 |
| J&K Kitchens Limited | Hospitality | 2024 |
| J. & R. Good (Wishaw) Limited | Wholesale & retail | 1979 |
| J.E.C. Landscapes Limited | Administrative & support | 2014 |
| J.M. Fencing Limited | Construction | 1997 |
| Jaace Limited | Other services | 2021 |
| Jack James Productions Ltd | Construction | 2023 |
| Jakarta Cabling Company Ltd | Construction | 2026 |
| Jamaf Ltd | Transport & logistics | 2021 |
| Jamaf Polscy Ksiegowi (UK) Ltd | Professional & scientific | 2025 |
| Jamaf Services Ltd | Professional & scientific | 2021 |
| James Keatings Plastering Ltd | Construction | 2023 |
| Jannah Kerr Aesthetics Ltd | Other services | 2026 |
| JAP Glasgow Motors Ltd | Wholesale & retail | 2019 |
| Japan Glasgow Motors Ltd | Wholesale & retail | 2015 |
| JAS Tech Ltd | Wholesale & retail | 2025 |
| Jatt Motors Ltd | Wholesale & retail | 2026 |
| JD Manufacturing & Construction Ltd | Manufacturing | 2019 |
| JDA Commercials Ltd | Wholesale & retail | 2025 |
| JDN Property Services Limited | Construction | 2021 |
| Jk&Sk Property Ltd | Households | 2023 |
| JL Construction Ltd | Construction | 2015 |
| JLM Painting and Decorating Limited | Construction | 2017 |
| JM Automotive Ltd | Wholesale & retail | 2025 |
| JM Joinery & Fencing Ltd | Construction | 2023 |
| JMB Travel Limited | Transport & logistics | 2009 |
| Jmcc Property Limited | Households | 2025 |
| JN Xpress Ltd | Transport & logistics | 2025 |
| Joaservices Limited | Information & communication | 2014 |
| Jocks Scot Ltd | Hospitality | 2025 |
| John King & SON Limited | Extraterritorial | 1927 |
| John Quinn Solar Engineering Ltd | Professional & scientific | 2022 |
| Joloccei Global Resources Ltd | Administrative & support | 2024 |
| Joyful-Rest Serviced Accommodation Ltd | Hospitality | 2022 |
| JR Building & Landscaping Limited | Administrative & support | 2021 |
| JS Telecoms Ltd | Construction | 2019 |
| JSA Traders (Scotland) Ltd | Wholesale & retail | 2015 |
| JSF Property Group Ltd | Real estate | 2026 |
| JSH Stores Ltd | Wholesale & retail | 2018 |
| June's Bridal Wear Limited | Wholesale & retail | 2011 |
| Justpixel Technologies Ltd | Information & communication | 2024 |
| JZL Trading Limited | Hospitality | 2026 |
| Kamco Ownership Ltd | Real estate | 2013 |
| Kamco Retail Ltd | Wholesale & retail | 2009 |
| Kamsaz Ltd | Transport & logistics | 2025 |
| KAW Consulting Limited | Construction | 2025 |
| KCC Contracts Ltd | Construction | 2009 |
| KD Parcels Ltd | Transport & logistics | 2017 |
| Kemm Electrical Contractors Limited | Construction | 2022 |
| Kerrco Electrical Ltd | Construction | 2022 |
| Kevco Logistics Ltd | Transport & logistics | 2019 |
| Kevin Mccready Electrical Ltd | Construction | 2014 |
| Keytrove Limited | Education | 2025 |
| Khan Enterprises Glasgow Ltd | Information & communication | 2020 |
| Kinsmen Investment Ltd | Construction | 2026 |
| Kirkhill Grocers Limited | Wholesale & retail | 2019 |
| Kirkton INS Brokers Limited | Financial services | 2017 |
| Kitchen & Bathroom Remodeling Limited | Construction | 2026 |
| Klepto Miniatures Ltd | Manufacturing | 2024 |
| KM Legit Business Solutions Ltd | Wholesale & retail | 2026 |
| KMC Digital Studio Ltd | Wholesale & retail | 2026 |
| KMT Cars Limited | Wholesale & retail | 2009 |