| Rana Estates (UK) Ltd | Other services | 2016 |
| Ranju Logistics Ltd | Transport & logistics | 2025 |
| Rapid Recoveries Limited | Wholesale & retail | 2019 |
| Rapids Valet Centre Ltd. | Administrative & support | 2005 |
| Rare Houses Ltd | Real estate | 2022 |
| Rarode Services Limited | Professional & scientific | 2025 |
| Rashamoll Ltd | Wholesale & retail | 2026 |
| Rashley Energy Ltd | Other services | 2024 |
| Raven Property Investment Ltd | Real estate | 2016 |
| Ravenlodge Limited | Hospitality | 2017 |
| Ravenmuir Limited | Hospitality | 2017 |
| Raving Rodents Studio Ltd | Professional & scientific | 2025 |
| Raygar Property Services Ltd | Construction | 2019 |
| RAZ Cleaning Solutions Ltd | Administrative & support | 2026 |
| Razam Super MKT Ltd | Wholesale & retail | 2025 |
| RCA Trust | Health & social care | 1986 |
| RCJ Contracts Ltd | Administrative & support | 2011 |
| RD Network Consulting Ltd | Information & communication | 2017 |
| RDA Consulting Ltd. | Professional & scientific | 2005 |
| RE Worn (Scotland) Limited | Wholesale & retail | 2025 |
| React Property Repair Ltd. | Construction | 2000 |
| React Signs Ltd | Manufacturing | 2020 |
| React-Fast UK Limited | Construction | 2003 |
| Real Letting 2 Limited | Real estate | 2018 |
| Real Letting Ltd. | Real estate | 2003 |
| Real Renting (Scotland) Ltd | Real estate | 2014 |
| Real Rents Ltd. | Real estate | 2005 |
| Realwand Limited | Extraterritorial | 1995 |
| Reaper Grappling Limited | Arts & recreation | 2020 |
| Rebuilt by Purpose Ltd | Education | 2025 |
| Red CAP 88 Limited | Hospitality | 2025 |
| Red Firehouse Ltd | Real estate | 2023 |
| Red Pepper Foods Limited | Wholesale & retail | 2025 |
| RED25 Consultancy Ltd | Information & communication | 2012 |
| RED25 Properties Ltd | Real estate | 2002 |
| Redbyre Holdings Limited | Real estate | 2019 |
| Reddy Subsea Ltd | Manufacturing | 2026 |
| Redss Catering Company Limited | Administrative & support | 2015 |
| Refractit Limited | Other services | 2016 |
| Refractive Scotland CIC | Education | 2023 |
| Regain Limited | Arts & recreation | 2021 |
| Regalis Consulting Ltd | Information & communication | 2025 |
| Regentmoray Ltd | Real estate | 2023 |
| Reids Garage Limited | Other services | 2021 |
| Reids of Paisley Motor Engineers Ltd. | Wholesale & retail | 2018 |
| Reids Van Centre Ltd | Extraterritorial | 2022 |
| Reilly Reinforcements Limited | Construction | 2017 |
| Reilly's Rentals Ltd | Administrative & support | 2022 |
| Reillys Autos Ltd | Wholesale & retail | 2019 |
| Reilly’S Coffee Shop Ltd | Hospitality | 2022 |
| Relax Accounting Ltd | Professional & scientific | 2021 |
| Remco Ventures Ltd | Other services | 2021 |
| Remode Renfrewshire CIC | Manufacturing | 2017 |
| Remodel Renovations Limited | Construction | 2020 |
| Remote Interpreters Limited | Professional & scientific | 2023 |
| Remulti Limited | Wholesale & retail | 2022 |
| Remzi Barbers Ltd | Other services | 2026 |
| Renewable Products Warehouse Ltd | Wholesale & retail | 2011 |
| Renfrew Car Sales Company Ltd | Wholesale & retail | 2018 |
| Renfrew Funeral Services Limited | Other services | 2005 |
| Renfrew Health and Wellness Hub CIC | Health & social care | 2024 |
| Renfrew Leisure Ltd | Other services | 2011 |
| Renfrew Riverside Properties Ltd | Real estate | 2018 |
| Renfrewshire Carers Centre | Health & social care | 1995 |
| Renfrewshire CBT & Counselling Services Ltd | Health & social care | 2023 |
| Renfrewshire Citizens Advice Bureau | Information & communication | 2005 |
| Renfrewshire Eats Limited | Hospitality | 2020 |
| Renfrewshire Landscapes & General Builders Limited | Administrative & support | 2019 |
| Renfrewshire Leisure Limited | Education | 2014 |
| Renfrewshire Leisure Trading Limited | Hospitality | 2002 |
| Renfrewshire Window Cleaning & Property Maintenance Limited | Administrative & support | 2023 |
| Renfrewshire Window Cleaning Ltd. | Administrative & support | 2018 |
| Renico Nameplates Ltd. | Manufacturing | 1997 |
| Rentahome (Scotland) Limited | Real estate | 2013 |
| Rentashoe Ltd | Administrative & support | 2019 |
| Renus Garage Ltd | Wholesale & retail | 2025 |
| Reputas Ltd | Professional & scientific | 2025 |
| Reset Your Emotion Ltd | Health & social care | 2023 |
| Residence Assured Ltd | Real estate | 2025 |
| Resilience and Recovery Educational and Empowerment Network CIC | Professional & scientific | 2023 |
| Resin Rise 25 Ltd | Manufacturing | 2025 |
| Resolute Consulting (Scotland) Limited | Professional & scientific | 2023 |
| Resolute Decorators Limited | Construction | 2024 |
| Resolvecall Limited | Professional & scientific | 1990 |
| Restoration & Creation Ltd | Wholesale & retail | 2022 |
| Retail Sales Solutions (Scotland) Ltd. | Professional & scientific | 1998 |
| Reuse Furniture Limited | Administrative & support | 2016 |
| Revenue Architecture Ltd | Professional & scientific | 2026 |
| Revolution Plumbing and Heating Solutions Ltd | Construction | 2025 |
| Rewire Solutions Ltd | Construction | 2019 |
| Reybyn Properties Ltd. | Real estate | 2014 |
| RFM Energy Management Ltd | Professional & scientific | 2026 |
| Rfmtrader Ltd | Wholesale & retail | 2025 |
| Rgpr Properties Ltd | Real estate | 2024 |
| Rhino Express Limited | Transport & logistics | 2022 |
| Rhino Express Solutions Ltd | Transport & logistics | 2019 |
| RI Gareloch Ltd | Hospitality | 2023 |
| Rian Nugent Ltd | Construction | 2025 |
| Richardson GAS & Heating Limited | Construction | 2022 |
| Ricky Sneddon Painters & Decorators Limited | Construction | 2011 |