| Nyaomi Marnoch Hair Ltd | Other services | 2025 |
| O'Brien Engineering Services Ltd | Professional & scientific | 2024 |
| Oak Tree (Aberdeen) Limited | Mining & quarrying | 2018 |
| Occupational Health, by Rebecca Ltd | Health & social care | 2024 |
| Ocean Rainforest UK Limited | Agriculture & fishing | 2023 |
| Ocean Work Systems Limited | Administrative & support | 2005 |
| Odwyer Subsea Ltd | Professional & scientific | 2021 |
| Odyssey Hair Design (Aberdeen) Limited | Other services | 2010 |
| Offshore Grid Limited | Administrative & support | 2004 |
| Offshore Water Management Ltd | Administrative & support | 2008 |
| OGR Logistics Ltd | Professional & scientific | 2018 |
| OIL Well Limited | Professional & scientific | 2000 |
| Oilfield Innovations Limited | Professional & scientific | 2010 |
| Olivnpat Limited | Wholesale & retail | 2019 |
| Omega Subsea UK Ltd | Professional & scientific | 2015 |
| One LAD Limited | Education | 2022 |
| Ootside Ltd | Wholesale & retail | 2025 |
| Optimized Project Consulting Limited | Professional & scientific | 2022 |
| Orbiter Property Management Ltd | Real estate | 2022 |
| Origin Offshore Ltd | Real estate | 2024 |
| Orka Solutions Limited | Professional & scientific | 2022 |
| OSM Crew Management Aberdeen Limited | Professional & scientific | 2007 |
| OSM Offshore Aberdeen Limited | Mining & quarrying | 2014 |
| Osprey Systems Ltd. | Construction | 2010 |
| Otormeking Engineering and Design Ltd | Professional & scientific | 2021 |
| OWM Rentals Ltd | Administrative & support | 2021 |
| Pajb Ltd | Wholesale & retail | 2024 |
| Passports Beyond Borders Ltd | Administrative & support | 2020 |
| Paul & Mathew Hospitality Ltd | Hospitality | 2025 |
| Paul&Mathewgroup Ltd | Wholesale & retail | 2025 |
| Performance Drilling Solutions Ltd | Professional & scientific | 2019 |
| Pesanijo Investments Limited | Real estate | 2015 |
| Pete's Letting & Renovation Ltd | Construction | 2026 |
| Petroexperts Ltd | Mining & quarrying | 2025 |
| Pgais Ltd | Professional & scientific | 2017 |
| Phil Kyle Limited | Wholesale & retail | 2021 |
| Phoenix EOM Limited | Professional & scientific | 2022 |
| Phoenix Subsea Developments Ltd | Professional & scientific | 2022 |
| Photography by Joanne Limited | Professional & scientific | 2008 |
| Planner BEE VA Services Ltd | Administrative & support | 2021 |
| PMJ Hospitality Ltd | Hospitality | 2025 |
| Portach Móna Services Limited | Professional & scientific | 2020 |
| Portico Architecture Group Limited | Administrative & support | 2014 |
| Portico Design Properties Limited | Real estate | 2014 |
| Portsoy Chippy Ltd | Hospitality | 2026 |
| Precision Project Controls Ltd | Professional & scientific | 2019 |
| Preikestolen Ltd | Professional & scientific | 2022 |
| Prime Technical Resources Ltd. | Professional & scientific | 2020 |
| Progressive BD Ltd | Professional & scientific | 2017 |
| Proscape (Scotland) Ltd | Administrative & support | 2025 |
| Proserv Africa Limited | Mining & quarrying | 2026 |
| Prospect Hunter Ltd | Wholesale & retail | 2025 |
| PT Networks Ltd | Construction | 2016 |
| Quality Assurance Services Limited | Professional & scientific | 2022 |
| R Cowie Services Ltd | Professional & scientific | 2023 |
| R G Edgar Limited | Real estate | 2016 |
| R G S Hutchison (Metals) Limited | Wholesale & retail | 2022 |
| R Nicoll Limited | Hospitality | 2022 |
| R&S Project Services Ltd | Real estate | 2010 |
| R2O Engineering Limited | Professional & scientific | 2009 |
| Redwing Liveries Limited | Arts & recreation | 1987 |
| Reeve Watt Service Ltd | Professional & scientific | 2019 |
| Reftrade UK Ltd. | Administrative & support | 2008 |
| Reliable Safety and Integrity Solutions Ltd | Professional & scientific | 2019 |
| Renistle Ltd | Professional & scientific | 2023 |
| Resman Wireless Reservoir Surveillance UK Ltd | Mining & quarrying | 2012 |
| Rigel Design Services Ltd | Mining & quarrying | 2007 |
| Rignet Mobile Solutions Limited | Information & communication | 2013 |
| Rignet UK Holdings Limited | Financial services | 2012 |
| Rignet UK Limited | Information & communication | 2005 |
| Rigzone Energy Limited | Professional & scientific | 1998 |
| Ring Matrix Ltd | Information & communication | 2023 |
| Risk & Integrity Solutions Ltd | Professional & scientific | 2019 |
| Ritchie's Plant Hire Limited | Agriculture & fishing | 1990 |
| Rjjp Limited | Information & communication | 2024 |
| RJM Rigging (Aberdeen) Limited | Construction | 2023 |
| RNG Business Services Ltd | Professional & scientific | 2025 |
| Rnpl OIL & GAS Ltd | Professional & scientific | 2011 |
| Robert Temple Joinery Ltd | Construction | 2023 |
| Robynson Investments Ltd | Real estate | 2023 |
| Rodrian Oceanic Ltd | Professional & scientific | 2025 |
| Roft Estimating Solutions Limited | Administrative & support | 2019 |
| Romac Services Ltd | Information & communication | 2023 |
| Root&Restore Nutrition Ltd | Health & social care | 2025 |
| Rosebank Garage Ltd | Wholesale & retail | 2025 |
| Ross Estimating Consultancy Limited | Administrative & support | 2007 |
| Ross Haworth Limited | Professional & scientific | 2013 |
| Rovkit Ltd | Manufacturing | 2026 |
| ROX Gear Ltd. | Wholesale & retail | 2016 |
| RPG Training Limited | Professional & scientific | 2017 |
| Rrmj Vape Vaults Limited | Wholesale & retail | 2023 |
| RS Joinery Services Limited | Construction | 2020 |
| Rugops Limited | Professional & scientific | 2024 |
| Ryan Morrice Roofing Limited | Construction | 2021 |
| RYC Engineering Ltd | Professional & scientific | 2025 |
| S Aziz & Company Limited | Professional & scientific | 2017 |
| S.G Garden Solutions Ltd | Administrative & support | 2017 |
| Sage Aesthetic Ltd | Health & social care | 2013 |
| Salamander Production (UK) Limited | Mining & quarrying | 2020 |
| Sallsoro Investments Ltd | Real estate | 2025 |