| Logicor Scotland Ltd | Wholesale & retail | 2016 |
| Lomond Home Care Limited | Health & social care | 2023 |
| Lomond Safe and Vault Ltd | Other services | 2022 |
| Lomondgate Commercial Ltd | Hospitality | 2022 |
| Lomondgate Properties Ltd | Real estate | 2024 |
| Looking Good Clydebank Limited | Other services | 2021 |
| Lormont Financial Planning Limited | Administrative & support | 2017 |
| Lounge Enterprises Ltd | Hospitality | 2019 |
| Lovat Eco Surveys Ltd | Professional & scientific | 2024 |
| LPS Construction & Utilities Limited | Hospitality | 2026 |
| LS Photo Scotland Ltd | Professional & scientific | 2020 |
| LT Tech Ltd | Professional & scientific | 2024 |
| Lucky Break Sports Bar Ltd. | Hospitality | 2023 |
| Luculent Learning Ltd | Education | 2018 |
| Lucy Fowler Post Limited | Arts & recreation | 2020 |
| Lunajewellery.Rocks Ltd | Manufacturing | 2018 |
| Luse Real Estate Ltd | Real estate | 2023 |
| Lvvl Ltd | Wholesale & retail | 2021 |
| LWL Platinum Cleaning Services Ltd | Administrative & support | 2025 |
| Lykris Innovation Global Ltd | Information & communication | 2025 |
| M&C Properties Glasgow Limited | Real estate | 2021 |
| M&H Painting and Jetwashing Ltd | Construction | 2021 |
| M&I Investment Group Ltd | Real estate | 2025 |
| MAC Counselling Limited | Education | 2022 |
| Macaskill Heating & Cooling Ltd | Construction | 2025 |
| Macdonald Associates (Glasgow) Limited | Professional & scientific | 2023 |
| Maclean Consultancy Services Ltd | Professional & scientific | 2024 |
| Maclean Fittings (Glasgow) Limited | Wholesale & retail | 1977 |
| Macmillan Property Maintenance Ltd. | Construction | 2009 |
| Macnewco Sixty Eight Limited | Real estate | 2001 |
| Magic Dent Removals Ltd | Wholesale & retail | 2025 |
| Mahony State Limited | Real estate | 2020 |
| Mains Estates & Lettings Limited | Real estate | 2018 |
| Mamanda Mountain Ltd | Other services | 2025 |
| Mara Care & Support Services Limited | Health & social care | 2024 |
| Marching Mutts Bootcamp Ltd | Other services | 2021 |
| Maria Kane Ltd | Health & social care | 2022 |
| Maritime Global Services Limited | Transport & logistics | 2020 |
| Maro Properties Ltd | Real estate | 2025 |
| Marshall Gray Investments Ltd | Real estate | 2025 |
| Marshall Gray Property Ltd | Real estate | 2019 |
| Marshall Property Services Ltd | Real estate | 2025 |
| Martin Stewart Property Ltd | Real estate | 2023 |
| Massam Ltd | Wholesale & retail | 2025 |
| Mavor Avenue Ltd | Real estate | 2016 |
| Mayur Mistry Design Limited | Professional & scientific | 2024 |
| MBM Refurbs Ltd | Real estate | 2026 |
| Mcallen Property & Design Limited | Professional & scientific | 2026 |
| MCB Roofing Glasgow Limited | Construction | 2024 |
| Mcdowell's Strength & Fitness Ltd | Arts & recreation | 2024 |
| Mcewan's Limited | Administrative & support | 2023 |
| Mcfarlane Access Flooring Ltd | Construction | 2022 |
| Mcgovern Decorators Painting Contractors Ltd | Construction | 2005 |
| Mcgowan Civils Ltd | Construction | 2019 |
| Mclaren & Mckechnie Limited | Wholesale & retail | 2014 |
| Mclaren Estates Ltd | Real estate | 2026 |
| Mcmonagles Restaurant Limited | Real estate | 2001 |
| Mcnab and Sons Limited | Construction | 2025 |
| Merch Territory Ltd | Wholesale & retail | 2024 |
| Merchant Software Limited | Information & communication | 1997 |
| MHM Ceilings Ltd | Construction | 2018 |
| Miam Holdings Limited | Financial services | 2023 |
| Michael Ross & Sons Ltd | Construction | 2019 |
| Michal N Ltd | Construction | 2023 |
| Micro 3500 Limited | | 1984 |
| Mile Away Films Ltd | Information & communication | 2023 |
| Mimiya Limited | Hospitality | 2025 |
| Mirren Group Limited | Professional & scientific | 2007 |
| Mission NET Zero Group Limited | Construction | 2024 |
| Mitchell and King Limited | Manufacturing | 2013 |
| MJ Autowerks Ltd | Wholesale & retail | 2025 |
| Mjch Parcels Ltd | Transport & logistics | 2019 |
| MJM Joinery and Construction Ltd | Construction | 2021 |
| MKS Property Group Ltd | Real estate | 2021 |
| ML Scaffolding Limited | Construction | 2025 |
| Mmeglasgow Ltd | Construction | 2023 |
| MMG Contracts (Scotland) Limited | Construction | 2007 |
| MNG Cleaning Ltd | Administrative & support | 2012 |
| Mobile Solutions Glasgow Ltd | Wholesale & retail | 2018 |
| Modern Homes Ltd | Construction | 2012 |
| Mohnas Ltd | Extraterritorial | 2024 |
| Mohnas Properties Ltd | Real estate | 2025 |
| Momo Trading Limited | Health & social care | 2023 |
| Moncur Street Limited | Hospitality | 2013 |
| Moncur Street Property Services Limited | Administrative & support | 2016 |
| Moneysaver UK Group Limited | Professional & scientific | 2015 |
| Morescotland Limited | Administrative & support | 2015 |
| Move Cars West (Glasgow) Ltd | Transport & logistics | 2026 |
| Move Cars West Ltd | Transport & logistics | 2023 |
| MPC Energy Limited | Professional & scientific | 2016 |
| MPC Renewables Ltd | Construction | 2020 |
| MR Cooper Ltd | Hospitality | 2022 |
| MR Karma Ltd | Information & communication | 2021 |
| MSN Valeting Ltd | Other services | 2023 |
| MT Cafes Limited | Hospitality | 2026 |
| Murallis Property Management Ltd | Households | 2024 |
| Murray & Millar Craft Family Butchers Ltd | Wholesale & retail | 2026 |
| Murray and Stevenson Properties Ltd | Real estate | 2025 |
| Murrmack Property Limited | Real estate | 2022 |
| My Little Fishes Nursery Limited | Education | 2006 |