| Muaz Cuisine Ltd | Hospitality | 2015 |
| Multijig Ltd | Extraterritorial | 2020 |
| Munro Access Services Ltd | Construction | 2016 |
| Munro Engineering Designs Limited | Mining & quarrying | 2006 |
| Murlin Enterprises Limited | Households | 2020 |
| Murray Duguid Limited | Agriculture & fishing | 2003 |
| Murray Roofing (Grampian) Ltd | Construction | 2017 |
| Muzmax Accounting Limited | Professional & scientific | 2025 |
| MVR (Turriff) Ltd. | Administrative & support | 2003 |
| Mwclubb Limited | Professional & scientific | 2022 |
| MYONE30 Ltd | Information & communication | 2018 |
| Myplumb Ltd | Construction | 2024 |
| N & B Calder Limited | Other services | 2012 |
| N & M L D Limited | Construction | 2000 |
| N DOW Livestock Ltd | Agriculture & fishing | 2018 |
| N21 Handyman Services Ltd | Real estate | 2020 |
| Narosa Workspace Ltd | Real estate | 2021 |
| Narova Holdings Limited | Real estate | 2017 |
| NAS Consultants Ltd. | Professional & scientific | 2007 |
| Nason Energy Limited | Administrative & support | 2010 |
| Nason Holdings Limited | Administrative & support | 2011 |
| Nason Investments Ltd | Administrative & support | 2010 |
| Navitas Analytics Limited | Professional & scientific | 2022 |
| NDM Engineering Ltd | Professional & scientific | 2014 |
| NE Towables Ltd | Administrative & support | 2026 |
| Nescotland Fire Risk Assessors Ltd | Public administration | 2017 |
| Network Mobile Solutions Limited | Administrative & support | 2019 |
| New SUB Electrical Ltd | Construction | 2019 |
| Newbelts Farms Ltd | Agriculture & fishing | 2022 |
| Newcastle Mini Ltd | Wholesale & retail | 2026 |
| Newplace Mechanical Services Ltd | Professional & scientific | 2024 |
| Nextgen Junior Golf LLP | | 2025 |
| Niallpaton Cabinet Makers Limited | Manufacturing | 2013 |
| Nick Ruta Fitness Limited | Arts & recreation | 2018 |
| Nico's Wrestling Kingdom Ltd | Education | 2023 |
| Nicol Commercial & Plant Services Ltd | Wholesale & retail | 2019 |
| Nicola Angus Bookkeeping Limited | Professional & scientific | 2011 |
| Nicta Properties Ltd | Real estate | 2023 |
| Nijak Limited | Real estate | 2014 |
| Njord Business Services Limited | Administrative & support | 2019 |
| NMJ Technical Support Ltd | Professional & scientific | 2022 |
| NO 7 Westfield Avenue Ltd | Real estate | 2025 |
| NO. 8 High Street Limited | Wholesale & retail | 2021 |
| NO. 8 Studio 2 Limited | Real estate | 2021 |
| North East 50 Limited | Administrative & support | 2026 |
| North East 500 Limited | Administrative & support | 2020 |
| North East Alteration Ltd | Other services | 2025 |
| North East Community Workshop Limited | Health & social care | 2013 |
| North East Construction Limited | Administrative & support | 2019 |
| North East Gymnastics Centre Ltd | Education | 2019 |
| North East Scotland NDT Services Ltd | Professional & scientific | 2022 |
| North Point Transport Consultancy Ltd | Transport & logistics | 2025 |
| North Street Store Ltd | Wholesale & retail | 2024 |
| Northern Fraction Ltd | Professional & scientific | 2024 |
| Northern Star Stud Ltd | Extraterritorial | 2021 |
| Northness Property Ltd | Real estate | 2024 |
| Northwinds Engineering Ltd | Professional & scientific | 2026 |
| Nourishing Insights Ltd. | Health & social care | 2013 |
| Nourishing Insights Services Ltd | Health & social care | 2024 |
| Novaflame Realms Ltd | Wholesale & retail | 2025 |
| NRG Project Management Ltd. | Professional & scientific | 2024 |
| Nudge Exchange Ltd. | Professional & scientific | 2013 |
| Nudge Works Limited | Information & communication | 2025 |
| NYL Limited | Real estate | 2021 |
| Nàdur Interiors Ltd | Hospitality | 2025 |
| Oak Lodge Renewables Limited | Administrative & support | 2016 |
| Oakbank Homes Limited | Construction | 1994 |
| Obsidian Components Limited | Manufacturing | 2024 |
| OCC Pro Limited | Health & social care | 2023 |
| Ocean Frontier Services Limited | Mining & quarrying | 2000 |
| Ochilview Energy Ltd | Professional & scientific | 2023 |
| Odus Homes Ltd | Real estate | 2023 |
| Offload Hose Services Ltd | Manufacturing | 2026 |
| Offshore Products Limited | Wholesale & retail | 2021 |
| Offshore Supply Vessel Services Limited | Manufacturing | 2018 |
| OIL Black Offshore Limited | Mining & quarrying | 1997 |
| Oilarmour Ltd | Professional & scientific | 2025 |
| Oilfield Technical Consulting Ltd | Other services | 2012 |
| Oldmeldrum Holdings Limited | Financial services | 2018 |
| Oldmeldrum Sports Committee | Arts & recreation | 1998 |
| OLP Finance Ltd | Professional & scientific | 2024 |
| Onestop Integrity Ltd | Professional & scientific | 2025 |
| Onsite Testing Services Ltd | Mining & quarrying | 2012 |
| Oornews Ltd | Information & communication | 2025 |
| Open Planet Software Limited | Information & communication | 2007 |
| Operatio Limited | Mining & quarrying | 2023 |
| Origin Composites Limited | Mining & quarrying | 1991 |
| Otter Arms Limited | Hospitality | 2018 |
| Outstanding Noble Fusions Ltd | Manufacturing | 2025 |
| P Booth Plumbing and Heating Ltd | Construction | 2019 |
| P G Quality Assurance Ltd | Professional & scientific | 2016 |
| P.T.M. Aggregates Limited | Construction | 2013 |
| PAF Agri + Labour Services Ltd | Agriculture & fishing | 2025 |
| Panel Rescue Limited | Other services | 2002 |
| Papaya Holdings Group Ltd | Hospitality | 2020 |
| Paragon Process Improvements Ltd | Professional & scientific | 2021 |
| Paramount Safety and Training Ltd | Professional & scientific | 2024 |
| Park Leading Design Ltd | Professional & scientific | 2022 |
| Parker & Sons Limited | Hospitality | 2017 |
| Parkstyle Farm Ltd | Agriculture & fishing | 2021 |