| Phoenix Meal Prep Limited | Hospitality | 2025 |
| Pillow Properties LLP | | 2020 |
| PIM Smart Ltd | Professional & scientific | 2016 |
| Pina Parie Ireland Ltd | Other services | 2017 |
| Pinesville Ltd | Information & communication | 2018 |
| Pixel Squared Limited | Information & communication | 2017 |
| Pjmd Limited | Professional & scientific | 2023 |
| PM Flat Roofing Ltd | Construction | 2023 |
| PM Plumbing & Heating Solutions Limited | Wholesale & retail | 2024 |
| Pmac Plant & 4X4 Ltd | Wholesale & retail | 2026 |
| Pmcc Enterprise Ltd | Wholesale & retail | 2024 |
| Pmce Thompson Ltd | Real estate | 2018 |
| PMN Construction Ltd | Construction | 2018 |
| Pmre Limited | Administrative & support | 2021 |
| PNK Services Solutions Ltd | Professional & scientific | 2023 |
| POB Capital Management Limited | Real estate | 2026 |
| POB Retail Ltd | Wholesale & retail | 2023 |
| Poco Picante Ltd | Manufacturing | 2024 |
| Portora Boat Club Limited | Arts & recreation | 2015 |
| Powerline TS Ltd | Construction | 2020 |
| Ppps Enniskillen Ltd | Manufacturing | 2023 |
| Practice Growth AI Ltd | Information & communication | 2026 |
| PRE Engineering Limited | Professional & scientific | 2023 |
| Precast Concrete Projects Ltd | Manufacturing | 2003 |
| Precision Dental (NI) Limited | Health & social care | 2023 |
| Premier Catering Fermanagh Limited | Hospitality | 2025 |
| Premier JUS Limited | Manufacturing | 2011 |
| Presley Joinery Limited | Manufacturing | 2005 |
| Prestige Property Fermanagh Limited | Real estate | 2025 |
| Probus Consulting Limited | Professional & scientific | 2023 |
| Probus Financial Solutions Ltd | Professional & scientific | 2006 |
| Progressive Insurance & Mortgages Limited | Financial services | 2018 |
| Proptechni Ltd | Wholesale & retail | 2025 |
| Prufe Solutions Ltd | Information & communication | 2025 |
| Prune Point Limited | Real estate | 2019 |
| Prunty Contracts Limited | Construction | 1973 |
| Prunty Group Limited | Construction | 2010 |
| Prunty Pitches (NI) Limited | Construction | 2010 |
| PSD Turbines Limited | Energy | 2013 |
| Psdh Properties Limited | Real estate | 2015 |
| PST Trading Group Ltd | Wholesale & retail | 2025 |
| PTG HK Limited | Manufacturing | 2015 |
| Purpose Gym Ltd | Extraterritorial | 2023 |
| QEL Air Ltd | Professional & scientific | 2011 |
| Quality & Patient Safety Ltd | Administrative & support | 2020 |
| Quality Homes (NI) Limited | Construction | 2009 |
| Quality Wood Mouldings Limited | Manufacturing | 2003 |
| Quantum Dent Ltd | Health & social care | 2016 |
| Quay Garden Structures Ltd | Wholesale & retail | 2021 |
| Quench Inns Limited | Hospitality | 2007 |
| Quigley Plant Hire (Ireland) Ltd | Construction | 2024 |
| Quigley Plant Hire Limited | Construction | 2016 |
| Quinn Curr Productions Ltd | Arts & recreation | 2013 |
| Quintess Denta Limited | Manufacturing | 2012 |
| QUORIS3D Limited | Wholesale & retail | 2012 |
| R O Haire Ltd | Wholesale & retail | 2019 |
| R2 Motor Repairs Limited | Manufacturing | 2017 |
| Radharc NA Cuilcagh Limited | Hospitality | 2020 |
| Radiant Dentistry Limited | Health & social care | 2014 |
| Railway Hotel (Enniskillen) Limited the | Hospitality | 1976 |
| Rampandey Properties Limited | Real estate | 2025 |
| Rana United Ltd | Wholesale & retail | 2026 |
| Rathcarne Holdings Ltd | Financial services | 2026 |
| Raveesh Gaind Consultancy Ltd | Other services | 2021 |
| Rawbrooke Roofing and Construction Ltd | Construction | 2026 |
| Ray-Diant Clinical Ltd | Health & social care | 2026 |
| Raymill Property and Investment Company Limited | Real estate | 1975 |
| RB Agri Inspection Limited | Administrative & support | 2018 |
| RBD Three-Point Properties Limited | Real estate | 2023 |
| RC Engineering Services (NI) Limited | Construction | 2012 |
| RC Farms Limited | Agriculture & fishing | 2017 |
| Ready EGG Products Limited | Manufacturing | 1982 |
| Recad One Ltd | Real estate | 2021 |
| Rect Limited | Construction | 2025 |
| Redbank Energy Limited | Extraterritorial | 2017 |
| Redborne Limited | Education | 2014 |
| Redoubt Properties Limited | Real estate | 2014 |
| Redrock Machinery Australia Ltd | Wholesale & retail | 2025 |
| Redslave Limited | Energy | 1996 |
| Reihill Properties Limited | Real estate | 2016 |
| Rekkur (NI) Limited | Manufacturing | 2012 |
| Remm Property Ltd | Construction | 2024 |
| RET Estates Limited | Construction | 1999 |
| Retail-Dsm Ltd | Manufacturing | 2020 |
| Return to Play Sports Medicine Ltd | Health & social care | 2018 |
| Revive Contracts Ltd | Construction | 2025 |
| Rgbni Ltd | Professional & scientific | 2023 |
| RH Agri Consultancy Ltd | Agriculture & fishing | 2020 |
| RH Autos Enniskillen Limited | Wholesale & retail | 2017 |
| RH Contracts Ltd | Administrative & support | 2026 |
| Rhand International Ltd | Wholesale & retail | 2025 |
| Richmond Independent Financial Advice Ltd | Financial services | 2022 |
| Rigg Mount Holdings Ltd | Manufacturing | 2025 |
| Right Rentals Limited | Households | 2023 |
| Ringside Restaurant Ltd | Hospitality | 2018 |
| Riverbank Estate and Land Management Ltd | Real estate | 2018 |
| Riverside Apartments (Kesh) Management Company Limited | Households | 2007 |
| Riverside Caravan and Marina Limited | Hospitality | 2023 |
| Riverside Educational Psychology Services Limited | Education | 2024 |
| RJ Mitten & Sons Ltd | Mining & quarrying | 2025 |