| Petite Feet Plus Limited | Health & social care | 2022 |
| Petra Construction Ltd | Construction | 2025 |
| PFS Solutions NI Ltd | Administrative & support | 2023 |
| Phantom FOX Ltd | Arts & recreation | 2024 |
| Phatbelfast Ltd | Hospitality | 2026 |
| Pherson Rigging & Lifting Ltd | Construction | 2025 |
| Philip Burns Dental Care Limited | Health & social care | 2010 |
| PHO Glen Ltd | Hospitality | 2025 |
| Physiotherapy Associates Ltd | Health & social care | 2026 |
| PIP Fire & Security Ltd | Administrative & support | 2012 |
| PIP Security Systems LLP | | 2009 |
| Pipework Services (N.I.) Ltd | Manufacturing | 1999 |
| Pirtek Belfast (2005) Ltd | Manufacturing | 2005 |
| Pizzeria Maria Ltd | Hospitality | 2024 |
| PJ Foster Enterprises Ltd | Other services | 2016 |
| PJ Veronica Associates Ltd | Information & communication | 2026 |
| Plantasy Ltd | Manufacturing | 2026 |
| Plumb GAS (N.I.) Ltd | Construction | 2021 |
| PMB Vehicle Preparation Ltd | Other services | 2018 |
| PMC Elect Ltd | Construction | 2014 |
| PMG Cars Limited | Wholesale & retail | 2015 |
| PMR Welding Ltd | Construction | 2017 |
| Pointtwo Ltd | Wholesale & retail | 2024 |
| Polar Refrigeration International Limited | Manufacturing | 2022 |
| Port Transport Services Limited | Transport & logistics | 2018 |
| POS Services Ireland Ltd | Other services | 2021 |
| Potty Little Plants Ltd | Agriculture & fishing | 2024 |
| Power Epos Technologies Ltd | Other services | 2025 |
| Ppaari Retail Ltd | Wholesale & retail | 2025 |
| Praevista Limited | Professional & scientific | 2025 |
| Pre-Form Plastics Limited | Wholesale & retail | 1989 |
| Premier Lawns Limited | Administrative & support | 2023 |
| Premier Lawns Media Limited | Information & communication | 2018 |
| Prestige NI Foods Ltd | Wholesale & retail | 2025 |
| Prestige Sales (2017) Limited | Wholesale & retail | 2017 |
| Primal Strength & Conditioning Limited | Arts & recreation | 2015 |
| Prime Compliance Limited | Professional & scientific | 2025 |
| Print NI Ltd | Manufacturing | 2005 |
| Printers House Management Co Ltd | Real estate | 2015 |
| Prize Ninja Ltd | Arts & recreation | 2023 |
| Profile Event Management Limited | Information & communication | 2012 |
| Project General Manufacturing Ltd | Hospitality | 1999 |
| Project Romania | Other services | 2015 |
| Prometni Ltd | Manufacturing | 2022 |
| Proper Melt Holdings Ltd | Financial services | 2025 |
| Property Link (M & H) Ltd | Real estate | 2013 |
| Property Link (N.I.) Limited | Real estate | 2005 |
| PROPERTY33NI Ltd | Real estate | 2024 |
| Propertyfinishedproperly Ltd | Construction | 2022 |
| Proplanning Consultancy Ltd | Professional & scientific | 2026 |
| Prosafe Products Ltd | Wholesale & retail | 1999 |
| PRP Food Ltd | Hospitality | 2023 |
| PSI Production Services Limited | Construction | 2009 |
| PUB Supplies Limited | Wholesale & retail | 2023 |
| Pugman Media Ltd | Professional & scientific | 2021 |
| Purpose Enterprise Group Ltd | Financial services | 2024 |
| Purssell Firestopping Ltd | Construction | 2025 |
| Qaggo Ltd | Wholesale & retail | 2024 |
| Qsni Ltd | Professional & scientific | 2019 |
| Qualcom Managed Services Limited | Information & communication | 2013 |
| Quality Design Print & Packaging Ltd | Professional & scientific | 2024 |
| Quality Drives Ltd | Construction | 2022 |
| Quality Training Assessment Services Limited | Professional & scientific | 2019 |
| Quarity Ltd | Information & communication | 2019 |
| Quay Solutions Ltd | Transport & logistics | 2026 |
| Queens of the Camino Limited | Other services | 2025 |
| Queuetwo Ltd | Professional & scientific | 2015 |
| Quik TIP Ltd | Information & communication | 2024 |
| Quinn Financial Services Newtownabbey Ltd | Financial services | 2012 |
| R and R Grounds Limited | Administrative & support | 2016 |
| R D Mechanical Services (NI) LLP | | 2011 |
| R D Mechanical Services Ltd | Manufacturing | 2001 |
| R K Signs and Services Ltd | Professional & scientific | 2024 |
| R Series Powerlifting Ltd | Arts & recreation | 2024 |
| R&N Bespoke Designs Ltd | Manufacturing | 2023 |
| R.D.F. (NI) Ltd | Real estate | 2011 |
| R.H.L. Properties Limited | Real estate | 2016 |
| Raaxo Limited | Wholesale & retail | 2023 |
| Radhuni 1 Ltd | Hospitality | 2018 |
| Radhuni Belfast Ltd | Hospitality | 2026 |
| Railway Lodge Fine Art Ltd | Wholesale & retail | 2026 |
| Rapid Garage Ltd | Wholesale & retail | 2025 |
| Rare Tools Ltd | Wholesale & retail | 2024 |
| Rathfern Community Regeneration Group | Other services | 2019 |
| RD Mechanical Services Holdings Limited | Financial services | 2025 |
| RD Property Mangement Ltd | Real estate | 2025 |
| RD123 Ltd | Manufacturing | 2025 |
| REA Estates Co. Durham (NI) Limited | Construction | 2007 |
| REA Hill Farm Ltd | Agriculture & fishing | 2017 |
| Readability Tutors Dyslexia Community Interest Company | Education | 2019 |
| Reading Rainbows Ltd | Education | 2020 |
| Real Gain Investment Ltd | Real estate | 2021 |
| Red Rock Software Limited | Information & communication | 2013 |
| Redbrick Realty (12GD) Ltd | Real estate | 2023 |
| Redbrick Realty Group Ltd | Real estate | 2023 |
| Redbrick Realty Ltd | Real estate | 2022 |
| Redbrick Realty Property Management Ltd | Real estate | 2023 |
| Redemption Respraying Ltd | Wholesale & retail | 2026 |
| Redfield Developments Ltd | Construction | 2019 |
| Redhigg Construction Limited | Construction | 2021 |