| Nldc Contracts Ltd | Construction | 2003 |
| Nm.Well Ltd | Wholesale & retail | 2024 |
| Nnamdia Ltd | Information & communication | 2021 |
| NO 7 Sports Bar Limited | Hospitality | 2022 |
| Noble Gold Traders Ltd | Manufacturing | 2025 |
| Non-Stop Black Ltd | Wholesale & retail | 2025 |
| Nonna Lina's Ltd. | Hospitality | 2008 |
| Noremac Security Services Limited | Administrative & support | 2016 |
| Norrie's Humanist Services Ltd | Other services | 2018 |
| North Building Services Ltd | Administrative & support | 2008 |
| North Lanarkshire Private Hire Limited | Transport & logistics | 2016 |
| North Lanarkshire Properties LLP | | 2012 |
| North Lanarkshire Titans CIC | Arts & recreation | 2022 |
| North Logiealmond Wind Farm Limited | Professional & scientific | 2023 |
| Northbrae Limited | Real estate | 2005 |
| Northburn Capital Limited | Real estate | 2014 |
| Northside Truck & Van Limited | Wholesale & retail | 2004 |
| Nova Property Management Services Limited | Administrative & support | 2014 |
| Novaroot Limited | Wholesale & retail | 2026 |
| Novotek Holdings Limited | Information & communication | 2017 |
| Novotek UK & Ireland Limited | Information & communication | 2004 |
| NP Industrial Services Group Ltd | Construction | 2010 |
| Nqca Limited | Professional & scientific | 2015 |
| NSM Quantum Ltd | Professional & scientific | 2023 |
| NT Agile REC Ltd | Administrative & support | 2019 |
| NU3GO Ltd | Wholesale & retail | 2025 |
| Nualach & Athru Ltd | Professional & scientific | 2025 |
| Nurse Julia Aesthetics Ltd | Other services | 2025 |
| NWL Co. Developments Ltd | Manufacturing | 2021 |
| NWL Honeypot Farm LLP | | 2026 |
| O M O a Limited | Hospitality | 2009 |
| O'Neill Roofing and Cherrypicker Hire Ltd | Construction | 2020 |
| OA999 Ltd | Wholesale & retail | 2022 |
| Oakfield Healthcare Limited | Wholesale & retail | 2020 |
| Oakham Real Estate Limited | Real estate | 2023 |
| Oazis Ltd | Extraterritorial | 2021 |
| Ocho Bocatas Ltd | Hospitality | 2025 |
| Odak Group Ltd | Information & communication | 2020 |
| Offord GAS Services Ltd | Construction | 2019 |
| Oilfast Holdings Limited | Wholesale & retail | 2013 |
| Oilfast Limited | Wholesale & retail | 2021 |
| Oilfastexpress Ltd | Wholesale & retail | 2023 |
| Oilmaxx Ltd | Wholesale & retail | 2021 |
| OJB Transport Ltd | Other services | 2015 |
| Okkia UK Ltd | Wholesale & retail | 2024 |
| Old Park Woods Limited | Real estate | 1993 |
| OLN Construction Ltd | Other services | 2024 |
| Omozuwa Limited | Health & social care | 2020 |
| ON Site Audio Visual Services Limited | Arts & recreation | 2004 |
| ON Site Project Services Ltd | Water & waste | 2014 |
| ON the Ball Football Centre Ltd | Arts & recreation | 2025 |
| ON the JOB Training Limited | Professional & scientific | 2025 |
| One Bite Takeaway Ltd | Hospitality | 2024 |
| One MAN and a Goat Limited | Administrative & support | 2019 |
| One Roofing and Building Services Ltd | Construction | 2022 |
| One Stop Audio Visual Shop Limited | Professional & scientific | 2012 |
| Oneseven Property Ltd | Real estate | 2023 |
| Onesti's @ the REX Limited | Hospitality | 2017 |
| Online Window & Door Network Ltd | Manufacturing | 2021 |
| Ooakbo Ltd | Wholesale & retail | 2022 |
| Open Road Training Ltd | Transport & logistics | 2024 |
| Optical Security Solutions Ltd | Administrative & support | 2023 |
| Optimum-Mba Limited | Professional & scientific | 1995 |
| Option One Events Ltd | Arts & recreation | 2018 |
| Oran Solutions Ltd | Information & communication | 2024 |
| ORB Fabrication & Engineering Ltd | Manufacturing | 2024 |
| Orbital Glass & Glazing Limited | Construction | 2025 |
| Orbital Surf UK Limited | Construction | 2024 |
| Orbost Ltd | Real estate | 2025 |
| Orchard Brae Ltd | Construction | 2014 |
| Orderup UK Ltd | Hospitality | 2024 |
| Orient Car Wash Ltd | Manufacturing | 2020 |
| Osav Edinburgh Limited | Professional & scientific | 2012 |
| Osav Glasgow Limited | Professional & scientific | 2012 |
| Outset Holdings Limited | Financial services | 2026 |
| OV Promotions Ltd | Wholesale & retail | 2019 |
| Owen Homes (Scotland) Limited | Real estate | 2004 |
| Owen Sails Ltd | Manufacturing | 2020 |
| Oxygen Treatment Specialists Limited | Other services | 2019 |
| Oyins Africa Ltd | Manufacturing | 2023 |
| P & E Plumbing (Scotland) Ltd | Construction | 2019 |
| P M Property Scotland Holdings Ltd | Real estate | 2023 |
| P W Leeds Ltd | Hospitality | 2023 |
| P&H Rendering Ltd | Construction | 2025 |
| Pachuco Limited | Wholesale & retail | 2014 |
| Paisley Couriers Limited | Transport & logistics | 2020 |
| Paisley Despatch Limited | Transport & logistics | 2018 |
| Paisley Picture Framers Ltd | Wholesale & retail | 2024 |
| Pamper Nails & Beauty Limited | Other services | 2024 |
| Pane Dangelo Limited | Hospitality | 2015 |
| Panjaab Cuisine Limited | Hospitality | 2024 |
| Panjab Cuisine Ltd | Hospitality | 2025 |
| Papercup MTH Ltd | Hospitality | 2022 |
| Paragon Decorators Scotland Ltd. | Construction | 2021 |
| Paragon Energy Networks Ltd | Construction | 2020 |
| Paramount Contractors (UK) Limited | Administrative & support | 2023 |
| Paramount Groundworks and Landscapes Limited | Administrative & support | 2013 |
| Paramount Training and Consultancy Services Ltd | Professional & scientific | 2013 |
| Paramount Wealth Management Limited | Financial services | 2024 |
| Paranet. UK Limited | Information & communication | 2013 |