| PuskaPromotion osk | Administrative & support | 2013 |
| Puutavaraliike Lautari Oy | Wholesale & retail | 2005 |
| Pyörä- ja moottorihuolto Hasti Ky | Other services | 2013 |
| Pääoman tutkimuslaitos PTL Oy | Professional & scientific | 2021 |
| RAN Recycling Oy | Wholesale & retail | 2007 |
| Remontti Eino OY | Construction | 2010 |
| RHJ-Urakointi Oy | Construction | 2014 |
| RHP Kiinteistöt Oy | Real estate | 2023 |
| RLR metsätyöt Ky | Administrative & support | 2013 |
| RM-Confidence Oy | Real estate | 2013 |
| RP-laitehuolto Oy | Manufacturing | 2018 |
| RV-Rakenne KY | Professional & scientific | 2005 |
| Raftman Oy | Transport & logistics | 2020 |
| Rahamaa Oy | Professional & scientific | 2021 |
| Rajaplan Oy | Professional & scientific | 1994 |
| Rakenne Avenue Ky | Construction | 2018 |
| Rakennus Siitari Oy | Construction | 2001 |
| Rakennus-Kalotti Oy | Real estate | 1997 |
| Rakennusliike M. Kurtti Oy | Construction | 1967 |
| Rakennuspalvelu Yliviuhkola oy | Construction | 2024 |
| Rakennussuunnittelu Polar-Cad Oy | Professional & scientific | 1990 |
| Ralle's Oy | Hospitality | 2022 |
| Rantaluotola Oy | Real estate | 2021 |
| Ratsuvintti Leena Pitkänen Ky | Wholesale & retail | 2014 |
| Rautapenne Oy | Wholesale & retail | 2012 |
| Ravintola Kemin Di Mare Oy | Hospitality | 2006 |
| Restikka Oy | Wholesale & retail | 2024 |
| Reverie Invest Oy | Hospitality | 2025 |
| Rio Invest Oy | Real estate | 2015 |
| Roma Ambiente Ky | Hospitality | 1993 |
| Ruutinlämpö Oy | Energy | 1975 |
| Rytikarin Luotola Oy | Real estate | 2023 |
| Rytikarin Työväenasunnot Oy | Real estate | 2025 |
| Rölli Lastentavarat Ky | Wholesale & retail | 1990 |
| SAH-Talotekniikka Oy | Professional & scientific | 2017 |
| Seadventures OY | Transport & logistics | 2018 |
| SP-Tec Oy | Construction | 2016 |
| SSR Valaistus Oy | Professional & scientific | 2019 |
| Stsec OY | Administrative & support | 2010 |
| Saafe Oy | Hospitality | 1988 |
| Sakari Jomppanen avoin yhtiö | Wholesale & retail | 2009 |
| Saletistinatsaa oy | Construction | 2025 |
| Salubre Oy | Wholesale & retail | 2003 |
| Saneeraus Nauska Oy | Real estate | 1981 |
| Satamakonttori Oy | Other services | 2021 |
| Saukert Oy | Professional & scientific | 2020 |
| Saumaton Kourupalvelu Raino Lundqvist Ky | Wholesale & retail | 1988 |
| SaunaSeilari Oy | Transport & logistics | 2021 |
| Saura Ky | Construction | 2010 |
| Scanhammer Ky | Hospitality | 2013 |
| Sdreamy Productions Oy | Arts & recreation | 2021 |
| Sea Lapland Housing Oy | Hospitality | 2025 |
| Seacafe Oy | Hospitality | 2018 |
| Secure Screen Oy | Administrative & support | 2021 |
| Seita Stone Oy | Manufacturing | 1994 |
| Sempre Storages Oy | Transport & logistics | 2020 |
| Shutdown Partners Oy | Information & communication | 2021 |
| Signe Lauk Studio Oy | Construction | 2020 |
| Simech Oy | Manufacturing | 2024 |
| Simo Viide Ky | Transport & logistics | 1999 |
| Skancorex Oy | Manufacturing | 2004 |
| Smilea Ky | Administrative & support | 2018 |
| Smilea Siivous Oy | Administrative & support | 2022 |
| Smilea Turva Oy | Administrative & support | 2020 |
| Sorvipuu Ky | | 1987 |
| Sovea Oy | Health & social care | 2012 |
| SubFeele Oy | Wholesale & retail | 2015 |
| Subway Oy | Wholesale & retail | 1982 |
| Sudden Death Productions Oy | Arts & recreation | 2022 |
| Sun Suutari Oy | Other services | 2016 |
| Suomen Akku- ja rengasmyynti Oy | Wholesale & retail | 2011 |
| Suomen Projekti-asunnot Oy | Hospitality | 2021 |
| Suomen Purkutyöt Oy | Construction | 2022 |
| Suomen Salpa Oy | Administrative & support | 2008 |
| Suomen Turvamiehet Ky | Administrative & support | 2009 |
| Suomen Turvamiehet Yhtiöt Oy | Administrative & support | 2019 |
| Suomen lemmikkitarvikkeet Oy | Wholesale & retail | 2021 |
| Suomen rakennussaneeraus Oy | Construction | 2022 |
| Suorsa Group Oy | Construction | 1993 |
| Suunnittelu Teikari Oy | Manufacturing | 2017 |
| Syväkankaan Kioski Oy | Wholesale & retail | 1996 |
| Sähkö-Karvonen Oy | Construction | 1997 |
| Sähköasennus Keskikallio Oy | Construction | 2019 |
| Sähköhuolto JiiTee Oy | Construction | 1999 |
| Sähköpooli Oy | Construction | 1992 |
| T. Långström Oy | Administrative & support | 1994 |
| T.A. Kaakinen Oy | Wholesale & retail | 1943 |
| TAWAN Ky | Administrative & support | 2010 |
| TDR Finland Oy | Other services | 2007 |
| Telpal OY | Construction | 2025 |
| Toivon Kuulo OY | Health & social care | 2017 |
| Taksi 75 Oy | Transport & logistics | 2015 |
| Taloushallintopalvelut Esko Kesti Oy | Professional & scientific | 2010 |
| Tanun kala Oy | Agriculture & fishing | 2020 |
| Tanya Nurkkala ky | Wholesale & retail | 2024 |
| Tapio Ylisuvanto Oy | Transport & logistics | 1996 |
| Tarteekki Oy | Wholesale & retail | 2019 |
| Tatu Marttinen Oy | Construction | 2015 |
| Taxi M.Holopainen Oy | Transport & logistics | 2024 |
| Taxi Rose Oy | Transport & logistics | 2005 |