| Realm Properties Limited | Real estate | 2011 |
| Reaper Subsea Limited | Professional & scientific | 2024 |
| Rear Investments Limited | Real estate | 2024 |
| Rebecca Louise Retail Limited | Wholesale & retail | 2021 |
| Rebel INK Limited | Other services | 2011 |
| Rebel Lounge Limited | Other services | 2024 |
| Rebel PT Limited | Arts & recreation | 2015 |
| Recad Ltd | Professional & scientific | 2005 |
| Recognition Process Engineering Services Ltd | Professional & scientific | 2010 |
| Recycle Solutions (Scotland) Limited | Professional & scientific | 2010 |
| Red Hunter Limited | Professional & scientific | 2012 |
| Red Kite Oilfield Services Ltd | Professional & scientific | 2018 |
| Red Mantle Aggregates Limited | Mining & quarrying | 2010 |
| Red Mantle Recycling Ltd | Mining & quarrying | 2026 |
| Red Pint Ltd | Hospitality | 2025 |
| Red Rocket Labs Ltd | Manufacturing | 2024 |
| Red Spice (Scot) Ltd | Hospitality | 2019 |
| Red Squirrel Farming Limited | Agriculture & fishing | 2021 |
| Red Stag Materials Limited | Wholesale & retail | 2006 |
| Red Wing Holdings UK, Ltd | Manufacturing | 2012 |
| Red Wing UK, Ltd | Wholesale & retail | 2002 |
| Reda Energy Ltd | Administrative & support | 2012 |
| Redcode Network Ltd | Information & communication | 2024 |
| Redcraigs Lodges LLP | | 2013 |
| Redd Scotland Limited | Extraterritorial | 1983 |
| Reddy Aberdeenshire Ltd | Wholesale & retail | 2023 |
| Redeemed Christian Church of GOD- Fountain of Love | Other services | 2014 |
| Redlearn Limited | Financial services | 2016 |
| Redmac Developments Limited | Real estate | 2017 |
| Redmond Design Services Limited | Administrative & support | 2012 |
| Redmoss Yoga and Reiki Ltd | Other services | 2021 |
| Redox CS Ltd | Wholesale & retail | 2025 |
| Redress Dynamics Ltd | Manufacturing | 2025 |
| Redrow Homes (Wallyford) Limited | Construction | 2000 |
| Reds of Aberdeen Ltd | Wholesale & retail | 2025 |
| Redwood Park Investments Limited | Financial services | 2025 |
| Reedie Electrical Ltd | Construction | 2018 |
| Reema Limited (81/75) | | 1959 |
| Refillosophy Limited | Wholesale & retail | 2019 |
| Reflections Hair and Beauty Salon Limited | Other services | 2020 |
| Reflex Marine Limited | Manufacturing | 1992 |
| Reflex Subsea Limited | Extraterritorial | 2015 |
| Reforesting Scotland | Other services | 1991 |
| Refresh Bespoke Painting & Decorating Limited | Construction | 2016 |
| Regal Law Centre Ltd | Professional & scientific | 2025 |
| Regans Inn Ltd | Hospitality | 2024 |
| Regenerate European Sustainable Agriculture CI General Partner Limited | Financial services | 2022 |
| Regenerate European Sustainable Agriculture CI LP | | 2022 |
| Regent Aberdeen Ltd | Real estate | 2024 |
| Regent Marine Services Ltd | Professional & scientific | 2022 |
| Regent Quay Development Limited | Construction | 2025 |
| Regi Engineering Ltd | Professional & scientific | 2018 |
| Regi Property Ltd | Real estate | 2023 |
| Regional Energy Developments Limited | Professional & scientific | 2018 |
| Reho 360 Events Limited | Education | 2023 |
| Reho Support Services Ltd | Information & communication | 2011 |
| Rehoboth Theological Seminary Ltd | Education | 2025 |
| Reid and Smith Developments Limited | Real estate | 2025 |
| Reid Electrical Ltd | Construction | 2023 |
| Reid Properties Ltd | Real estate | 2023 |
| Reid Removals & Transport Limited | Transport & logistics | 2025 |
| Rejuvenated Fitness Club Limited | Arts & recreation | 2023 |
| Rejuvenating Aesthetics Limited | Other services | 2024 |
| Rekart Petroleum LP | | 2013 |
| Reliance (AB) Ltd | Hospitality | 2016 |
| Reliance Immigration Agency Ltd | Professional & scientific | 2021 |
| Reliant Properties (Peterhead) Ltd. | Administrative & support | 2005 |
| Relishindelight Treats and More Ltd | Manufacturing | 2025 |
| Relocation Scotland Limited | Professional & scientific | 2007 |
| Relyon Glasgow Limited | Education | 2015 |
| REM Trade Ltd | Wholesale & retail | 2025 |
| Remote Measurement Systems Limited | Mining & quarrying | 1998 |
| Remote Systems Solutions Ltd. | Mining & quarrying | 2004 |
| Renaissance Property Scotland Limited | Administrative & support | 2004 |
| Renatus Holdings Limited | Professional & scientific | 2026 |
| Rendezvous With Sandie Ltd | Other services | 2023 |
| Renewable Energy Support Services Ltd | Water & waste | 2022 |
| Renovate With Emma Limited | Professional & scientific | 2025 |
| Renovixforlife Limited | Construction | 2025 |
| Renquip Group Limited | Financial services | 2025 |
| Renquip Limited | Other services | 2021 |
| Rent, Shuffle and Roll Ltd | Administrative & support | 2021 |
| Rental Technology and Services Limited | Administrative & support | 2022 |
| Renteasyaberdeene Ltd Ltd | Hospitality | 2023 |
| Rentincome Limited | Hospitality | 2006 |
| Renting Bay Ltd | Real estate | 2024 |
| Rentnreturn Ltd | Information & communication | 2026 |
| Reputation Poll International Ltd | Professional & scientific | 2022 |
| Requip Holdings Limited | Financial services | 2024 |
| Requip Services Limited | Wholesale & retail | 2015 |
| RER Engineering Limited | Professional & scientific | 2022 |
| Resaura Limited | Professional & scientific | 2018 |
| Rescom Technology Limited | Information & communication | 2001 |
| Research Consortium (Ggmrs) Ukeig | | 1994 |
| Research Manifesto Ltd | Information & communication | 2023 |
| Reservoir and Wireline OG Ltd | Professional & scientific | 2025 |
| Reservoir Engineering Systems Limited | Real estate | 2011 |
| Reset HR LLP | | 2025 |
| Resman Technology UK Ltd | Mining & quarrying | 2025 |
| Resolve Trauma & Phobia Therapy Ltd | Professional & scientific | 2022 |