| Johann Smith Consultancy Ltd | Education | 2023 |
| John Boyle Property Services Ltd | Real estate | 2023 |
| John Galvin Design Ltd | Manufacturing | 2016 |
| John Hood & Co (Copper Alloys) Limited | Wholesale & retail | 1977 |
| John M Newlands Painters and Decorators Limited | Construction | 2016 |
| John Stewart Jewellers Irvine Ltd | Real estate | 2023 |
| Jonathan Trew Limited | Information & communication | 2003 |
| Jordan Greene Optical Limited | Health & social care | 2023 |
| Jovs Ltd | Wholesale & retail | 2017 |
| JP Auto Repairs Clydebank Ltd | Wholesale & retail | 2022 |
| JP Property Investments Scotland Limited | Real estate | 2024 |
| Jppk Ltd | Wholesale & retail | 2013 |
| JRD Transport Ltd | Transport & logistics | 2024 |
| JTE Properties Scotland Limited | Real estate | 2026 |
| JTM Decorators Limited | Construction | 2024 |
| Jukon Facility Management Ltd | Administrative & support | 2026 |
| Junking Glasgow Ltd | Transport & logistics | 2024 |
| Just Innovations Limited | Wholesale & retail | 2025 |
| JWD Coaching Limited | Arts & recreation | 2023 |
| K and C Blinds Ltd | Manufacturing | 2024 |
| K G Brogan GAS Services Ltd | Construction | 2017 |
| K&L Local Ltd | Wholesale & retail | 2025 |
| K-Man Solutions Ltd | Other services | 2023 |
| K.M.C. Interiors Ltd | Construction | 2011 |
| K1 Barber 22 Ltd | Other services | 2026 |
| Kahama Ltd | Manufacturing | 2025 |
| Kailasa Heritage Limited | Wholesale & retail | 2026 |
| Karpow Ltd | Information & communication | 2015 |
| Kaysalu Ltd | Professional & scientific | 2018 |
| Kazim Ltd | Other services | 2020 |
| KD Filmco Limited | Information & communication | 2025 |
| KDC Clydebank Limited | Real estate | 2020 |
| Kebabish Original Scotland Ltd | Hospitality | 2019 |
| Kelly Brothers Landscaping and Gardening Ltd | Administrative & support | 2025 |
| Kelly's Gym Ltd | Arts & recreation | 2023 |
| Kerr Plumbing & Heating Ltd | Construction | 2023 |
| KG Business Investments Limited | Real estate | 2024 |
| KG Business Services Limited | Professional & scientific | 2019 |
| Kgdes Limited | Construction | 2022 |
| Kibook Ltd | Information & communication | 2022 |
| Kilbowie Consulting Group Ltd. | Professional & scientific | 2026 |
| Kilbowie Convenience Ltd | Wholesale & retail | 2024 |
| Kilbowie Park Ltd | Wholesale & retail | 2020 |
| Kilmardinny 69 Limited | Financial services | 2018 |
| Kings Barber Shop Ltd. | Other services | 2018 |
| Kirkwood SEO Ltd | Professional & scientific | 2025 |
| Kirstin Scott Golf Ltd | Wholesale & retail | 2026 |
| KJ Hvac Services Ltd | Professional & scientific | 2024 |
| KLF Electrical Services Ltd | Construction | 2018 |
| Klinikos Limited | Professional & scientific | 2003 |
| Klmm (Property) Limited | Real estate | 2024 |
| KM PUB Co Ltd | Hospitality | 2016 |
| KMC Heating & GAS Ltd | Construction | 2024 |
| KMC Solutions Limited | Professional & scientific | 2012 |
| KMM Coffee Group Ltd | Hospitality | 2025 |
| Knockalla Property Ltd | Real estate | 2023 |
| KOD Trading Limited | Wholesale & retail | 2017 |
| KPO Engineering Services Ltd | Construction | 2023 |
| KPP Logistics Limited | Transport & logistics | 2010 |
| Kritayaga Holdings Limited | Administrative & support | 2024 |
| KRP Enterprises Limited | Wholesale & retail | 2014 |
| KTB Glasgow Limited | Hospitality | 2026 |
| KVC (UK) Limited | Manufacturing | 1999 |
| L a Supply Chain Services Ltd | Professional & scientific | 2013 |
| L G Holiday Homes Ltd | Hospitality | 2022 |
| L.S.E.H. Projects Limited | Mining & quarrying | 2023 |
| Landmark Investing Limited | Real estate | 2024 |
| Lanes Lettings Limited | Real estate | 2019 |
| Laradam Interiors Ltd | Construction | 2023 |
| Latto Scientific Building Consultants Ltd | Construction | 2012 |
| LBA Contracts Limited | Administrative & support | 2023 |
| Lblg Ltd | Hospitality | 2021 |
| LC Seafood Ltd | Wholesale & retail | 2025 |
| LCD Heating & GAS Services Limited | Construction | 2018 |
| LDC Joinery Ltd | Construction | 2025 |
| LEE Distribution Limited | Transport & logistics | 2023 |
| Legacy Scotland CIC | Information & communication | 2026 |
| Letsgetfishing Ltd | Information & communication | 2017 |
| Lewis Burns Holdings Limited | Arts & recreation | 2021 |
| LG Glasgow Ltd | Construction | 2019 |
| LGC Safe Holding Ltd | Real estate | 2026 |
| LHE Foods Ltd | Hospitality | 2026 |
| Lhgs Security and Maintenance Ltd | Administrative & support | 2019 |
| LI Consultants Ltd | Administrative & support | 2018 |
| Light on the Path Limited | Education | 2012 |
| Lilies Care Ltd | Health & social care | 2021 |
| Lilla Lawns and Landscaping Ltd | Water & waste | 2023 |
| Lilla Waste Solutions Ltd | Water & waste | 2025 |
| Lindun Properties Limited | Real estate | 1999 |
| Linwood Carpets Limited | Manufacturing | 2019 |
| Little O’S Deli Ltd | Hospitality | 2024 |
| Little Soho Property Limited | Real estate | 2023 |
| Littlegigglesparties Ltd | Arts & recreation | 2025 |
| LJM Hairdressing Ltd | Other services | 2026 |
| LK Properties (Glasgow) Limited | Real estate | 2022 |
| LMT Property Investors Ltd | Real estate | 2022 |
| Lmtif Limited | Information & communication | 2017 |
| Local Hero Live Event Management Limited | Arts & recreation | 2023 |
| Local Hero Media Limited | Information & communication | 2023 |
| Loch Lomond Properties Limited | Administrative & support | 2004 |