| Monifieth Premier Ltd | Wholesale & retail | 2022 |
| Monifieth Roofing & Joinery Ltd | Construction | 2020 |
| Monikie Catering Ltd | Hospitality | 2025 |
| Monkcastle Distribution Limited | Wholesale & retail | 2015 |
| Mono Motors Ltd | Wholesale & retail | 2025 |
| Monoland L.P. | | 2010 |
| Monomack Services Limited | Manufacturing | 2016 |
| Monowest L.P. | | 2016 |
| Montari Commerce LP | | 2016 |
| Montay Consult Ltd | Construction | 2025 |
| Montespada Consultancy Ltd | Information & communication | 2025 |
| Montpath Limited | Real estate | 1982 |
| Montstar Transport L.P. | | 2016 |
| Monty's Stay and Play Limited | Health & social care | 2024 |
| Montynero Ltd | Information & communication | 2010 |
| Moock Environmental Solutions Limited | Water & waste | 1999 |
| Moon Nails & Spa Ltd | Other services | 2022 |
| Moonshake Ltd | Hospitality | 2018 |
| Moonstone Enterprises Ltd | Professional & scientific | 2024 |
| Moore Corporation L.P. | | 2015 |
| Moorex Projects LP | | 2017 |
| Moorhead Nursery Limited | Education | 2003 |
| Moovii Ltd | Information & communication | 2015 |
| MOP Services Ltd | Construction | 2025 |
| Mordente Plumbing and Heating Limited | Construction | 2025 |
| Mordentes Takeaways Limited | Hospitality | 2010 |
| More Partnership Ltd | Professional & scientific | 2018 |
| More Than Profit Ltd | Information & communication | 2026 |
| Morison Walker Limited | Households | 1993 |
| Mormac Property (Scotland) Ltd | Real estate | 2024 |
| Moro Pubs Ltd | Hospitality | 2024 |
| Morphinx Ltd | Construction | 2023 |
| Morris Site Machinery (Scotland) Limited | Extraterritorial | 2013 |
| Morrison & Mutch Property Investments Limited | Real estate | 2005 |
| Morrison and Law Property Development Limited | Construction | 2025 |
| Morrison Legal Ltd | Professional & scientific | 2025 |
| Mortgages & Financial Services for ALL (Scotland) Ltd. | Financial services | 2003 |
| Morton Properties (Dundee) Limited | Real estate | 1973 |
| Morvada Limited | Financial services | 2020 |
| Mosquito Cocktail Ltd | Information & communication | 2019 |
| Mostyns (Footwear) Limited | Wholesale & retail | 1977 |
| MOT Station Dundee Ltd | Wholesale & retail | 2019 |
| Motest Dundee Ltd | Wholesale & retail | 2018 |
| Moth Investments Ltd | Real estate | 2018 |
| Mother Belle Limited | Financial services | 2025 |
| Motorhome Hub Scotland Limited | Wholesale & retail | 2019 |
| Motortech Dundee Ltd | Wholesale & retail | 2024 |
| Mount Everest (Aberdeen) Limited | Hospitality | 2016 |
| Mount Warren Properties Ltd | Real estate | 2023 |
| Mountley L.P. | | 2011 |
| Mountquhanie (Louise) Limited | Agriculture & fishing | 2010 |
| Mountquhanie Limited | Agriculture & fishing | 2010 |
| Mountroad L.P. | | 2014 |
| Mountwall Development L.P. | | 2015 |
| Mousoa Business Ventures Limited | Wholesale & retail | 2026 |
| Mousoa International Limited | Professional & scientific | 2025 |
| Move Smartly Ltd | Professional & scientific | 2024 |
| Move Well Physio Ltd | Health & social care | 2026 |
| Movetrack Sales LP | | 2017 |
| Moving Matters (Scotland) Ltd | Financial services | 2022 |
| MOW and More Ltd | Administrative & support | 2015 |
| Mozzambos Ltd | Hospitality | 2026 |
| MP Research & Evaluation Limited | Professional & scientific | 2026 |
| MP Valeting Ltd | Wholesale & retail | 2026 |
| Mpai Store Limited | Information & communication | 2022 |
| Mpdelievering Ltd | Transport & logistics | 2025 |
| MPGH1 Ltd | Hospitality | 2012 |
| MPW Renovations Ltd | Construction | 2023 |
| MR & MRS Food (Dundee) Limited | Hospitality | 2020 |
| MR Crown Limited | Wholesale & retail | 2022 |
| MR Forklift Services Limited | Other services | 2021 |
| MR Reid Ltd | Construction | 2026 |
| MR Singleton Property Management Ltd | Real estate | 2024 |
| Mrds (Dundee) Ltd | Construction | 2025 |
| MRE Logistics Ltd | Transport & logistics | 2026 |
| Mrgoodguy Ltd | Arts & recreation | 2026 |
| MRH Stonemasons Limited | Construction | 2026 |
| MRI Montangus Limited | Real estate | 2021 |
| MRK CAB Ltd | Transport & logistics | 2021 |
| MS Cabs Ltd | Transport & logistics | 2018 |
| MS Catering Dundee Limited | Hospitality | 2019 |
| MS Household Ltd | Wholesale & retail | 2023 |
| MS. Corp Ltd | Administrative & support | 2012 |
| MSA Developments Ltd | Real estate | 2024 |
| MSC Tiling Limited | Construction | 2025 |
| Msip Ltd | Administrative & support | 2019 |
| MSL (Scotland) Limited | Transport & logistics | 1996 |
| MSR Dundee Limited | Wholesale & retail | 2026 |
| Msrfa Limited | Professional & scientific | 2025 |
| MSS Services Ltd | Hospitality | 2025 |
| Mstechnologia Ltd | Administrative & support | 2025 |
| MSW Investments Limited | Real estate | 2018 |
| MSW Trade Purchasing Limited | Administrative & support | 2017 |
| MSZ Catering Ltd | Hospitality | 2021 |
| MT Project Management Ltd | Professional & scientific | 2021 |
| MTC Media Limited | Information & communication | 2005 |
| MTC Mobile Ltd | Information & communication | 2012 |
| Mtl-Access-Scaffolding Ltd | Construction | 2025 |
| MTN Sarraf Limited | Extraterritorial | 2012 |
| MTS Vehicle Sales Limited | Wholesale & retail | 2014 |