| Rakennus Sjögren Oy | Construction | 2019 |
| Rakennus- & Remonttipalvelu S.B OY | Construction | 2023 |
| Rakennusinsinööritoimisto HTL-Suunnittelu Oy | Professional & scientific | 1998 |
| Rakennusliike E. ja M. Prinkkilä avoin yhtiö | Construction | 1984 |
| Rakennusliike JHS Oy | Construction | 2011 |
| Rakennusliike KJ Aalto Oy | Manufacturing | 1982 |
| Rakennusliike Kuoppala Oy | Construction | 1978 |
| Rakennuspalvelu Jari Saari Oy | Construction | 2005 |
| Rakennuspalvelu M. Havulehto Oy | Construction | 2004 |
| Rakennuspelti Seppälä & Luoto Ky | Construction | 1989 |
| Rakennussuunnittelu Leo Haglund Oy | Professional & scientific | 1986 |
| Rakennustoimisto V.O. Mattila Oy | Construction | 1987 |
| Rakennustyö VH Oy | Construction | 2020 |
| RamaDrama Ab | Information & communication | 2022 |
| Ramdiu Oy | Professional & scientific | 2021 |
| Rami Seppä Oy | Professional & scientific | 2000 |
| Rannikkotohtori Oy | Health & social care | 2023 |
| Rannikon Kiinteistökehitys Oy | Real estate | 2025 |
| Rannikon Siivous Ky | Administrative & support | 1989 |
| Ranor Oy | Construction | 1988 |
| Ranta Ventures Oy | Professional & scientific | 2007 |
| Rantalinnan taidekehystämö Oy | Manufacturing | 2022 |
| Rapid Pizza Oy | Hospitality | 2024 |
| Rapilan Puutarha Kommandiittiyhtiö | Agriculture & fishing | 1983 |
| Ratsutila Tanjantupa Oy | Arts & recreation | 2010 |
| Raunio Invest Oy | Real estate | 2024 |
| Rautatieläisten Asunto-Osuuskunta Suoja | Real estate | 1921 |
| Ravintola Salakapakka Ky | Hospitality | 2001 |
| Ravintola Sunsari Oy | Hospitality | 2022 |
| Ravintolakoneet Vaasa Oy Ab | Wholesale & retail | 2012 |
| Raxaamo Oy | Construction | 2018 |
| Razia Emmanuel Oy | Hospitality | 2021 |
| ReStore Second Hand Oy | Wholesale & retail | 2018 |
| ReadyGolf Ab | Information & communication | 2025 |
| Realia Oy | Wholesale & retail | 2009 |
| Reapro Oy | Construction | 2008 |
| Recenter Oy | Administrative & support | 2017 |
| Red Sea Lunch Café öppet bolag | Hospitality | 2015 |
| Regiment Oy | Manufacturing | 2015 |
| Reijo Rinta-Jouppi Oy | Real estate | 1993 |
| Reikyt Oy | Other services | 1987 |
| Reiltas Oy | Financial services | 2022 |
| Rekryt Europe Oy | Manufacturing | 2022 |
| Rekryt Finland Oy | Manufacturing | 2022 |
| Rekryt Oy | Manufacturing | 2024 |
| Reliance Solutions Oy | Information & communication | 2021 |
| Reline Oy | Professional & scientific | 2004 |
| Remontti Paasiala Oy | Construction | 2021 |
| Remowa Europe Oy | Manufacturing | 2022 |
| Remowa Finland Oy | Manufacturing | 2023 |
| Remowa Oy | Construction | 1995 |
| Rengas- ja Autohuolto Kb Car Port Ky Däck- och Bilservice | Transport & logistics | 1992 |
| Rennova Oy | Administrative & support | 2010 |
| Rensa Ab Oy | Information & communication | 2021 |
| Rentafun Oy | Administrative & support | 2021 |
| Rento tila Oy | Health & social care | 2008 |
| Reperkka Oy | Professional & scientific | 2021 |
| ReplotBo Oy | Real estate | 2012 |
| Repop Vintage Oy | Wholesale & retail | 2019 |
| ResqTech Vaasa Oy | Other services | 2025 |
| Result Digital Oy | Information & communication | 2015 |
| Resultec Oy | Wholesale & retail | 1998 |
| Rethink New Media Solutions Ab Oy | Information & communication | 1998 |
| Retoka Oy | Construction | 2019 |
| Revif Ab Oy | Professional & scientific | 2022 |
| Rex Kiinteistökehitys Oy | Real estate | 2021 |
| Rintakomsi Investment Oy | Financial services | 2021 |
| Riover Oy | Health & social care | 2009 |
| Riptide Ab | Financial services | 2025 |
| Risberg Infra Oy | Administrative & support | 2018 |
| Risberg Invest Oy | Financial services | 2018 |
| Ristinummen Fysioterapia Ky | Health & social care | 1982 |
| Ristorante Meli La Strada Ky | Hospitality | 2000 |
| Ritor Capital Oy | Real estate | 2018 |
| Rivitech Oy | Other services | 2024 |
| Roaming Oy | Manufacturing | 1994 |
| Rock'n Tech Oy | Professional & scientific | 2019 |
| Rokka & Kukkola Oy | Administrative & support | 2012 |
| Roko Music AB | Arts & recreation | 2020 |
| Romi Systems Ab Oy | Professional & scientific | 2014 |
| Rondo Catering Oy Ab | Hospitality | 2014 |
| Ronnies Consulting Oy | Professional & scientific | 2020 |
| Roopertinkadun liikepuisto Bangla Oy | Real estate | 2018 |
| Rosenberg Audit & Consulting Oy Ab | Professional & scientific | 2011 |
| Rotec Engineering Ltd Oy | Wholesale & retail | 1993 |
| Rothovius Oy | Professional & scientific | 2001 |
| Roukala Automation Oy | Professional & scientific | 2026 |
| Roukus Oy | Professional & scientific | 2012 |
| RoutaRatsu Oy | Arts & recreation | 2016 |
| Roxta Oy | Information & communication | 2019 |
| Roy Jakobsson LKV Oy | Real estate | 2022 |
| Ru Runeberg Ab Oy | Manufacturing | 2018 |
| Ruben & Norman Oy | Professional & scientific | 2025 |
| Ruihong Oy | Hospitality | 2025 |
| Runsorin Autohuolto Oy | Wholesale & retail | 2011 |
| Runsorin Kiinteistöpalvelut Oy | Construction | 1990 |
| S. Damstén Byggkonsult Kb | Wholesale & retail | 1985 |
| S.P.J. Invest Oy | Construction | 2023 |
| SA Financing Oy | Financial services | 2025 |
| SABA Invest Oy Ab | Energy | 2014 |