| Lobster POD Ltd | Professional & scientific | 2016 |
| Loch Leven Lodges Ltd | Administrative & support | 2005 |
| Lochee Lounge Ltd | Arts & recreation | 2024 |
| Lochform Engineering Services Limited | Professional & scientific | 1980 |
| Lochside Developments Limited | Construction | 2012 |
| Locktek Ltd | Administrative & support | 2025 |
| Loco Taxis Limited | Transport & logistics | 2024 |
| Lohi Enterprises PVT Ltd | Transport & logistics | 2026 |
| Loki ES Ltd | Construction | 2025 |
| Lomondmuir Farm Ltd | Agriculture & fishing | 2026 |
| Lompark Limited | Extraterritorial | 1984 |
| Loops Driving Tours Ltd | Administrative & support | 2024 |
| Lora Lennox Ltd | Wholesale & retail | 2020 |
| Lorraine Taggart School of Dance Ltd | Arts & recreation | 2025 |
| LOS Toros Dunfermline Ltd | Hospitality | 2025 |
| Lothian Hire Centre Limited | Administrative & support | 2014 |
| Love Touring Limited | Wholesale & retail | 2018 |
| LPJ Industries Ltd | Professional & scientific | 2022 |
| LPS Developments Scotland Ltd | Construction | 2023 |
| LS Aesthetics and Skincare Ltd | Health & social care | 2025 |
| Ltd Smile Ltd | Health & social care | 2024 |
| LTJ Architecture Limited | Professional & scientific | 2020 |
| LTJ Properties Limited | Real estate | 2016 |
| Lucam Holdings Limited | Real estate | 2021 |
| Lucem Vitae Ltd | Manufacturing | 2022 |
| Lugg & Gould Limited | Agriculture & fishing | 1990 |
| Lukas & Matt Ltd | Professional & scientific | 2026 |
| Lundie Property Development Limited | Real estate | 2003 |
| Luss Hawthorn Limited | Construction | 2023 |
| Luxe Weave Ltd | Wholesale & retail | 2024 |
| Luxury by Design Limited | Professional & scientific | 2024 |
| LVB Developments Ltd | Households | 2021 |
| LW Thistle Ltd | Hospitality | 2025 |
| LWS Tiles Limited | Wholesale & retail | 2013 |
| Lynch Group Holdings Limited | Financial services | 2026 |
| Lyncombe Brokers Limited | Financial services | 2014 |
| Lyne Burn Holdings Limited | Wholesale & retail | 2025 |
| Lynx Power Ltd | Wholesale & retail | 2022 |
| LYR IT Ltd | Wholesale & retail | 2026 |
| M & F Joiners Ltd | Construction | 2023 |
| M Asam Properties Ltd | Households | 2023 |
| M N Joinery Ltd | Construction | 2014 |
| M&S Accountancy and Taxation Ltd | Professional & scientific | 2015 |
| M.M.Kitchen Fitters Limited | Construction | 2008 |
| M.R.M. Joinery Limited | Construction | 1996 |
| M4PROJECTS Ltd. | Information & communication | 2009 |
| MA Site Engineering Ltd | Professional & scientific | 2024 |
| MAC Accountants Limited | Professional & scientific | 2017 |
| Macatto Limited | Information & communication | 2014 |
| Maccallum Builders Ltd | Construction | 2018 |
| Maccallum Clark Ltd | Construction | 2024 |
| Macdonald Group Limited | Water & waste | 2022 |
| Mackay & Stenhouse Ltd | Construction | 2012 |
| Mackay Security Systems Limited | Administrative & support | 2018 |
| Mackintosh Oats Scotland Ltd | Manufacturing | 2020 |
| Maclean & Bruce Limited | Wholesale & retail | 2013 |
| Macmaster Mortgage and Protection Ltd | Financial services | 2026 |
| Maddfox Limited | Wholesale & retail | 2019 |
| Maelor Scotland Forest Nurseries Limited | Agriculture & fishing | 2017 |
| Magic WOK Guang Ltd | Hospitality | 2025 |
| Magnus Mortgage and Protection Advice Ltd | Financial services | 2021 |
| Magus Consultancy Limited | Information & communication | 2014 |
| Main Star Ltd | Health & social care | 2026 |
| Mains 2 Drains Utility Services Ltd | Professional & scientific | 2020 |
| MAJ Ventures Limited | Information & communication | 2022 |
| Majster Ltd | Construction | 2021 |
| Malcolm Jack & Matheson Limited | Professional & scientific | 2019 |
| Malcolm Milne Ltd. | Construction | 2009 |
| Maloco + Associates Limited | Real estate | 2014 |
| Maloco Mowat Parker Lettings Limited | Financial services | 2019 |
| Maltprop Limited | Real estate | 2025 |
| Mamos Technologies Ltd | Construction | 2013 |
| Managed IT Experts Ltd | Information & communication | 2008 |
| Managed IT Group Ltd | Information & communication | 2022 |
| Mandala Financial Services Limited | Professional & scientific | 2019 |
| Manderson and SON Groundworks Limited | Construction | 2026 |
| Mango Clouds Limited | Information & communication | 2001 |
| Manini Ltd | Professional & scientific | 2023 |
| Manna Group Limited | Wholesale & retail | 2022 |
| Manpower Engineering Ltd | Manufacturing | 2025 |
| Manse Vehicle Management Limited | Wholesale & retail | 2008 |
| Manveer Bahia Coaching Ltd | Education | 2026 |
| MAP Realty Limited | Real estate | 2024 |
| Marc Potter Landscaping Ltd | Administrative & support | 2025 |
| Marchstone (Bertram) Ltd | Construction | 2019 |
| Mardi Gras Bars Ltd | Hospitality | 2024 |
| Marfig Limited | Construction | 2016 |
| Mark Smith Glazing Holdings Limited | Professional & scientific | 2006 |
| Markrow Services Limited | Transport & logistics | 2025 |
| Marlaw Pallet Services Limited | Manufacturing | 1988 |
| Marmo Property Limited | Real estate | 2023 |
| Maroon Property Group Ltd | Construction | 2022 |
| Marshall Cherries (Scotland) Ltd. | Agriculture & fishing | 2004 |
| Marshall Offshore Electrical Services Limited | Other services | 2015 |
| Marti Property Ltd | Real estate | 2025 |
| Martin Commercial Property (Scotland) Limited | Real estate | 2021 |
| Martin Holmes Commercial Property Ltd | Real estate | 2026 |
| Martin Property (Scotland) Limited | Real estate | 2013 |
| Martin Short Consultancy Ltd | Information & communication | 2023 |
| Marula Studios Ltd | Professional & scientific | 2025 |