| Muchacho Nethergate Ltd | Hospitality | 2016 |
| Muckle Studios Ltd | Professional & scientific | 2020 |
| Muda Menswear Ltd | Wholesale & retail | 2023 |
| Muffie Limited | Professional & scientific | 2023 |
| Muir Hardware Ltd | Wholesale & retail | 2024 |
| Muir Maintenance Ltd | Construction | 2025 |
| Muirfield Associates Ltd | Administrative & support | 2017 |
| Muirfield Consultants Ltd | Professional & scientific | 2019 |
| Muirhead Developments 1 Ltd | Construction | 2024 |
| Muirhead Garage Limited | Wholesale & retail | 2014 |
| Mulholland Housing Consultancy Limited | Professional & scientific | 2017 |
| MULTI21 Web Solutions Ltd | Information & communication | 2026 |
| Munchhive Limited | Hospitality | 2025 |
| Munchies TAY Ltd | Hospitality | 2025 |
| Munro Property Ventures Ltd | Real estate | 2026 |
| Murdland Properties Limited | Real estate | 2023 |
| Murdoch Ross Couriers Ltd | Transport & logistics | 2018 |
| Murphy Real Estate Holdings Ltd | Real estate | 2026 |
| Murray Mcgregor Limited | Manufacturing | 2009 |
| Murray Medical Reports Limited | Health & social care | 2026 |
| Murray Trading (Aberdeen) Ltd | Wholesale & retail | 2020 |
| Murraybrooke Properties Limited | Construction | 2003 |
| Murrayproperties(Dundee) Ltd | Real estate | 2020 |
| Murrays 24 Ltd | Transport & logistics | 2025 |
| MUSA26 Limited | Transport & logistics | 2023 |
| Musaf Ventures Limited | Wholesale & retail | 2025 |
| Music Dundee Limited | Other services | 2015 |
| MVA Consultancy Ltd | Information & communication | 2025 |
| MVD Productions Limited | Other services | 2022 |
| MVV Environment Baldovie Limited | Energy | 1994 |
| MW Reid Decorator Ltd | Construction | 2024 |
| Mwpoffshore Ltd | Construction | 2025 |
| Mwsf Ltd | Administrative & support | 2024 |
| MX3 Ltd | Information & communication | 2024 |
| MX4 Holdings Ltd | Financial services | 2024 |
| MXA Rendering Ltd | Construction | 2024 |
| MXA UK Store Ltd | Wholesale & retail | 2021 |
| Mxcnhq Ltd | Hospitality | 2018 |
| MXR Management L.P. | | 2016 |
| My Garden Landscapes Ltd | Administrative & support | 2024 |
| My Homecare (Dundee) Ltd | Other services | 2016 |
| My Neighbourhood Store Ltd | Wholesale & retail | 2025 |
| My Pinkie Promise Limited | Professional & scientific | 2009 |
| My Taxi Limited | Transport & logistics | 2024 |
| MYD Investments Ltd | Wholesale & retail | 2025 |
| Mygp Services Ltd | Health & social care | 2020 |
| Myla Productions Limited | Information & communication | 2019 |
| Myler (Dundee) Ltd | Professional & scientific | 2018 |
| Myler Events Ltd | Other services | 2023 |
| Myles Investments Ltd | Real estate | 2023 |
| Mylnefield Developments Ltd | Construction | 2015 |
| Myo-Vs Ltd | Information & communication | 2024 |
| Myortera Ltd | Professional & scientific | 2025 |
| Myp-Pc Scotland Ltd | Financial services | 2025 |
| Myprojects Ltd | Construction | 2025 |
| Myros Ltd | Wholesale & retail | 2026 |
| Mystical Fungi & Flora Limited | Agriculture & fishing | 2021 |
| Mysticbite Ltd | Hospitality | 2024 |
| Myta Logistics LP | | 2017 |
| N C Dundee Limited | | 2016 |
| N Dining Limited | Hospitality | 2015 |
| N J Rose Limited | Administrative & support | 2015 |
| N Malik & Bros UK Limited | Wholesale & retail | 2021 |
| N Robertson Supply Solutions Ltd | Administrative & support | 2013 |
| N Slater Ltd | Arts & recreation | 2025 |
| N W 213 Ltd | Transport & logistics | 2023 |
| N&H 786 Limited | Real estate | 2021 |
| N&M Property Ltd | Real estate | 2018 |
| N&N Cleaning Services Ltd | Administrative & support | 2021 |
| N.A. ALL Consultancy Ltd | Professional & scientific | 2026 |
| N.A.Fitfood Ltd | Other services | 2020 |
| N.S.A Utilities Scotland Ltd | Construction | 2024 |
| N2NETS Limited | Information & communication | 2005 |
| NA Dailach Services Limited | Hospitality | 2025 |
| Nabaa Bakir Limited | Health & social care | 2025 |
| Nabhu Grill Ltd | Hospitality | 2023 |
| Nadine Robertson Property Services Ltd | Real estate | 2011 |
| Nadmarc Ltd | Hospitality | 2013 |
| NAF! Stuff Limited | Other services | 2017 |
| Nails and Face Ltd. | Other services | 2015 |
| Nairn Holdings Limited | Manufacturing | 1994 |
| Nairn Subsea Consultancy Services Ltd | Professional & scientific | 2019 |
| NAM Invest LP | | 2016 |
| Namaste Booze 4 U Ltd | Wholesale & retail | 2018 |
| Namdim Safety Services Ltd | Other services | 2012 |
| Namo Games Ltd | Information & communication | 2013 |
| Nandina Investment Limited | Real estate | 2021 |
| Nanobubble Insights Ltd | Professional & scientific | 2024 |
| Nanogrid Marketing LP | | 2017 |
| Nanomarkets Limited | Information & communication | 2010 |
| Natalie Forrest Sport Psychology Services Ltd | Other services | 2025 |
| Natcon Solutions Limited | Manufacturing | 2011 |
| Natfolk Universal L.P. | | 2015 |
| Nationway L.P. | | 2011 |
| Native Aqua Ltd | Agriculture & fishing | 2023 |
| Nature's Finest Touch Limited | Professional & scientific | 2025 |
| Naturelase Ltd | Wholesale & retail | 2024 |
| Naughton Castle Garden Limited | Agriculture & fishing | 2002 |
| Navco Properties Ltd | Real estate | 2024 |
| Naveed Investments Limited | Real estate | 2016 |