| Resco Network Solutions Ltd | Information & communication | 2007 |
| Reset Media Limited | Administrative & support | 2019 |
| Resolute Advisory Limited | Construction | 2024 |
| Resonant Link Technology Limited | Manufacturing | 2020 |
| Resultmatters Limited | Professional & scientific | 2014 |
| Retail Solutions Guaranteed Ltd | Wholesale & retail | 2008 |
| Revana Money Limited | Information & communication | 2025 |
| Revved Radiance Ltd | Administrative & support | 2023 |
| REX News Ltd | Wholesale & retail | 2022 |
| RF Farming Limited | Agriculture & fishing | 2015 |
| RF Tronc Services Ltd | Administrative & support | 2026 |
| RGM Heating Ltd | Construction | 2020 |
| RGP ARB Limited | Agriculture & fishing | 2018 |
| RH Contracting Ltd | Administrative & support | 2023 |
| RH12 Ltd | Construction | 2024 |
| Rhedi Consultancy Limited | Administrative & support | 2024 |
| Rhema Healthcare Solutions Limited | Health & social care | 2011 |
| Ricci's Pizza Ltd | Hospitality | 2025 |
| Rickerby Cooper Ltd | Financial services | 2018 |
| Riddell Group Ltd | Financial services | 2023 |
| Right Directions HR Ltd | Administrative & support | 2025 |
| RIM Afro Caribbean Ltd | Wholesale & retail | 2024 |
| Rinneroon Properties Ltd | Hospitality | 2013 |
| Rinnocynthus Petzone Limited | Wholesale & retail | 2025 |
| Riverjordandistilledwater Ltd | Manufacturing | 2025 |
| Rivermanse Limited | Other services | 2003 |
| Rivertree Gardens Ltd | Administrative & support | 2009 |
| RJB IT Services Limited | Professional & scientific | 2010 |
| RJH Rigging Ltd | Construction | 2022 |
| RJR Installations Ltd | Construction | 2023 |
| RKS Diamond Properties Ltd | Real estate | 2023 |
| RM Car Network Ltd | Wholesale & retail | 2025 |
| RMA Health and Fitness Limited | Arts & recreation | 2024 |
| RMD Shopfitting Limited | Construction | 2015 |
| RMF Opex Ltd | Hospitality | 2023 |
| Rmsaps Limited | Construction | 2015 |
| RNE Commissioning Ltd | Administrative & support | 2023 |
| Rnjb Legacy Properties Ltd | Real estate | 2025 |
| Road Accident Solutions Limited | Professional & scientific | 2011 |
| Roam Digital Tours Limited | Arts & recreation | 2025 |
| ROB Fisher Consultancy Ltd | Professional & scientific | 2022 |
| Robert & Amir Ltd | Real estate | 2025 |
| Robert Cameron Limited | Construction | 2019 |
| Robertson Autocare Ltd | Wholesale & retail | 2019 |
| Robertson Strategic Consulting Ltd | Professional & scientific | 2024 |
| Robson Forth Group Limited | Financial services | 2020 |
| Robson Forth Limited | Professional & scientific | 2001 |
| Robson Golding Limited | Agriculture & fishing | 2021 |
| Rock Property Investments Scotland Ltd | Real estate | 2019 |
| Rockdog Productions Limited | Arts & recreation | 2024 |
| Rockell & Duncan Building Services Ltd | Construction | 2018 |
| Roeli Ltd | Professional & scientific | 2025 |
| Roemac Services Ltd. | Professional & scientific | 1995 |
| Rohaas Limited | Information & communication | 2022 |
| ROM Properties and Development Ltd | Real estate | 2025 |
| Room With a View Restaurant Limited | Hospitality | 2006 |
| Roots to Routes Learning Ltd | Education | 2025 |
| Roots UP Tree Surgery Ltd. | Agriculture & fishing | 2018 |
| Ropospark Limited | Professional & scientific | 2014 |
| Rosa's Recipes Ltd | Professional & scientific | 2025 |
| Rosewood Landscaping Limited | Administrative & support | 2005 |
| Rosport Ltd | Arts & recreation | 2021 |
| Ross & Connel LLP | | 2012 |
| Ross Energy Ltd | Construction | 2018 |
| Ross IT Solutions Ltd | Information & communication | 2021 |
| Rosyth Chiropractic Clinic Ltd | Health & social care | 2014 |
| Rosyth Foods Ltd | Hospitality | 2019 |
| Rosyth Joinery Limited | Construction | 2015 |
| Rosyth Royal Dockyard Limited | Manufacturing | 1986 |
| Rosyth Royal Dockyard Pension Trustees Limited | Professional & scientific | 1987 |
| Rosyth Sharks RFC Limited | Arts & recreation | 2017 |
| Route 2 Plus Ltd | Transport & logistics | 2018 |
| Rowan Sands Pet Hotel Limited | Hospitality | 2024 |
| Roxa Property Ltd | Real estate | 2023 |
| Royapeople Ltd | Professional & scientific | 2025 |
| Rpgworks Ltd | Construction | 2024 |
| RPM Roofing Ltd | Construction | 2023 |
| RPO Joinery & Building Services Ltd | Construction | 2014 |
| RS Car Hire Limited | Administrative & support | 2025 |
| RS Shab UK Limited | Wholesale & retail | 2023 |
| RS Telecoms Ltd | Information & communication | 2024 |
| RSA (Rentals) Limited | Administrative & support | 2011 |
| Rsjuk Ltd | Wholesale & retail | 2024 |
| RSQ Wealth Management Limited | Professional & scientific | 2024 |
| RTG Joinery Limited | Manufacturing | 2021 |
| RTS Telecom Services Ltd | Information & communication | 2026 |
| Rubys Nails Limited | Other services | 2017 |
| RUD Sawers Architects Limited | Professional & scientific | 2012 |
| Runthic Ltd | Wholesale & retail | 2025 |
| Russell Landscapes Ltd | Administrative & support | 2020 |
| Rusty Hoof Mobile Bar Limited | Hospitality | 2024 |
| Rutland Square Wealth Management Limited | Professional & scientific | 2024 |
| RVM Dynamics Ltd. | Information & communication | 2015 |
| RXT Management Limited | Professional & scientific | 2014 |
| Ryte Properties Management Ltd | Real estate | 2013 |
| S & D Property Holdings Ltd | Households | 2023 |
| S & M Dalgleish Limited | Agriculture & fishing | 2007 |
| S B F Fencing & Decking Ltd | Administrative & support | 2024 |
| S D Testing Consultants Ltd | Information & communication | 2014 |
| S Gardner Developments Ltd | Construction | 2022 |