| JPS Joiners and Builders Limited | Construction | 2020 |
| JR Fitness (Scotland) Ltd | Arts & recreation | 2020 |
| JRC - Jordan Roofing Co Ltd | Construction | 2016 |
| JRC Jordan Construction Ltd | Construction | 2017 |
| JRC Jordan Group Ltd | Agriculture & fishing | 2020 |
| JRC Jordan Roofing Contracts Ltd | Construction | 2021 |
| JRG Board UPS & Glazing Ltd | Construction | 2025 |
| JS Air Conditioning Limited | Professional & scientific | 2018 |
| Jsrs Foods Limited | Hospitality | 2025 |
| JT Bathrooms Ltd | Wholesale & retail | 2021 |
| Jtcreps Limited | Wholesale & retail | 2024 |
| Jugni Travel Ltd | Administrative & support | 2022 |
| Junkr Ltd | Water & waste | 2019 |
| Jurair Ltd | Energy | 2025 |
| Just Football Ltd | Education | 2020 |
| K Creaney Ltd | Construction | 2017 |
| K9 Revolution RAW Ltd | Wholesale & retail | 2023 |
| Kabul Stores Ltd | Wholesale & retail | 2025 |
| Kafkai Ltd | Information & communication | 2024 |
| KAI YU NG Delivery Ltd | Transport & logistics | 2026 |
| KAM 2020 Ltd | Hospitality | 2020 |
| Kane Construction Scotland Limited | Construction | 2026 |
| Kassette Ltd | Information & communication | 2022 |
| Kaynor Ltd | Construction | 2015 |
| KB Bathroom Distribution (Holdings) Limited | Financial services | 2020 |
| KB Bathrooms Limited | Wholesale & retail | 2013 |
| KCL Project Services Ltd | Professional & scientific | 2025 |
| KD Installs Limited | Construction | 2019 |
| Kelly Transport Services Limited | Transport & logistics | 2003 |
| Kenlite Electrics Ltd | Administrative & support | 2013 |
| Kentigern Construction Ltd | Construction | 2018 |
| KER Training Ltd | Education | 2018 |
| Kertech Security Systems Ltd | Administrative & support | 2018 |
| Kevin Benson Ltd | Other services | 2016 |
| Kfbproperty Ltd | Real estate | 2026 |
| Kgttransport Ltd | Transport & logistics | 2026 |
| Khuram Ltd | Wholesale & retail | 2020 |
| Kids Talk Rutherglen Ltd | Wholesale & retail | 2020 |
| King Communications & Security Limited | Construction | 2007 |
| Kinross Computer Systems Limited | Extraterritorial | 1984 |
| Kirkintilloch Model Engineering Society | Other services | 1997 |
| Kirkland Letting Agents Ltd | Real estate | 2023 |
| Kirkwood Fresh News Ltd | Wholesale & retail | 2018 |
| Kirkwood Foods Limited | Hospitality | 2025 |
| Kirkwood Garage Limited | Wholesale & retail | 2025 |
| Kirkwood Local Ltd | Wholesale & retail | 2026 |
| KK Media Limited | Arts & recreation | 2025 |
| KK Store (Scot) Ltd | Wholesale & retail | 2017 |
| KMC HR Solutions Ltd | Administrative & support | 2025 |
| KN Cannon Electrical Services Ltd | Construction | 2025 |
| Koh-I-Noor (Scot) Ltd | Hospitality | 2024 |
| Koolkare Refrigeration Limited | Manufacturing | 2013 |
| KPW Services Ltd | Construction | 2021 |
| KR Balloch Ltd | Construction | 2020 |
| KR Clyde Valley Eight Ltd | Construction | 2019 |
| KR Construction (Scotland) Ltd | Construction | 2018 |
| KRI Developments 010 Ltd | Construction | 2021 |
| KRK Property Group Limited | Real estate | 2023 |
| Krpg Ltd | Construction | 2020 |
| Krpp Ltd | Construction | 2020 |
| KSA Commerce Ltd | Wholesale & retail | 2026 |
| KTA Homecare Ltd | Health & social care | 2026 |
| L.A.O Driving School Ltd | Education | 2022 |
| Lammasknowe Limited | Professional & scientific | 2015 |
| LAN Network Solutions Ltd | Information & communication | 2018 |
| Lanarkshire Accident Law (Scotland) Ltd | Professional & scientific | 2022 |
| Lanarkshire Counselling and CBT Centre CIC | Education | 2021 |
| Lanarkshire Masonry Ltd | Manufacturing | 2025 |
| Lanarkshire VH Ltd | Administrative & support | 2025 |
| Late Night Services Ltd | Hospitality | 2020 |
| Lathams of Airdrie Ltd | Construction | 2023 |
| LBK9 Ltd | Wholesale & retail | 2025 |
| Lcad Fitness Ltd | Arts & recreation | 2023 |
| Lcad Property Ltd | Real estate | 2025 |
| Lccc (Scotland) Ltd | Health & social care | 2016 |
| LCM Upvc Window and Door Repairs Ltd | Construction | 2020 |
| Lden Spatial Cloud Data Limited | Construction | 2020 |
| LDM Environmental Solutions Limited | Professional & scientific | 2020 |
| LDM Rentals Ltd | Real estate | 2021 |
| LDT Finance Limited | Financial services | 2013 |
| Leagoni Ltd | Construction | 2025 |
| Lean Quality Meats Ltd | Hospitality | 2018 |
| Lees Foods Limited | Manufacturing | 2012 |
| Lewis Associates Ltd | Professional & scientific | 2019 |
| LHM Investments (N.I.) Limited | Real estate | 2024 |
| Lift, Shift & Install Ltd | Construction | 2018 |
| Lils Bars Ltd | Hospitality | 2025 |
| Linden Animation Consulting Limited | Administrative & support | 2025 |
| Lionheart Sports Ltd | Arts & recreation | 2015 |
| Little Daisies (Coatbridge) Limited | Health & social care | 2013 |
| Little Luxe Childrenswear Ltd | Wholesale & retail | 2024 |
| Livingston Kebab Limited | Hospitality | 2025 |
| Livingstone Compliance Limited | Financial services | 2025 |
| LJM Peps Ltd | Wholesale & retail | 2026 |
| LM Sparkle Ltd | Administrative & support | 2016 |
| LNC Transport Ltd | Transport & logistics | 2024 |
| Lnklogistics Ltd | Transport & logistics | 2025 |
| Local Marketing Works Limited | Information & communication | 2019 |
| Lock OUT (Scotland) Limited | Construction | 2012 |
| Logan & Mason Developments Ltd | Households | 2025 |