| Rovaniemen Laky Oy | Hospitality | 1990 |
| Rovaniemen Lapinpoika Ky | Hospitality | 1973 |
| Rovaniemen Lasikuitutuote Ky | Manufacturing | 1989 |
| Rovaniemen Latu ja Reitti Oy | Construction | 2018 |
| Rovaniemen Laukku Ky | Wholesale & retail | 1985 |
| Rovaniemen Levytyö Oy | Real estate | 1995 |
| Rovaniemen Liikenne Oy | Transport & logistics | 2014 |
| Rovaniemen MAHT-Asunnot Oy | Financial services | 2004 |
| Rovaniemen Marmaris Ravintola Oy | Hospitality | 2019 |
| Rovaniemen Master Oy | Wholesale & retail | 1995 |
| Rovaniemen Matkailu ja Markkinointi Oy | Professional & scientific | 2003 |
| Rovaniemen Matkailupalvelu Oy | Hospitality | 1989 |
| Rovaniemen Mattomaailma Oy | Wholesale & retail | 2009 |
| Rovaniemen Mediapalvelu Oy | Professional & scientific | 1997 |
| Rovaniemen Mini-Mani Oy | Wholesale & retail | 2019 |
| Rovaniemen Monimetalli Oy | Manufacturing | 2003 |
| Rovaniemen Moottorikoneistamo Oy | Manufacturing | 2012 |
| Rovaniemen Mountain Bike Center Oy | Wholesale & retail | 1995 |
| Rovaniemen Nord-Rakennus Oy | Construction | 1996 |
| Rovaniemen Optikko Oy | Wholesale & retail | 2015 |
| Rovaniemen Painatuskeskus Oy | Manufacturing | 2000 |
| Rovaniemen Pelti-Seppo Oy | Construction | 2019 |
| Rovaniemen Pintafixarit Ky | Construction | 2017 |
| Rovaniemen Puutuote Oy | Manufacturing | 1997 |
| Rovaniemen Päiväkodit Oy | Education | 1998 |
| Rovaniemen Rakennusapu Oy | Construction | 2009 |
| Rovaniemen Rappusiivouspalvelu Oy | Administrative & support | 1983 |
| Rovaniemen Ratsastuskeskus Oy | Education | 2013 |
| Rovaniemen Ravirata Oy | Arts & recreation | 2011 |
| Rovaniemen Suosiolankatu 1 Oy | Wholesale & retail | 2009 |
| Rovaniemen Sähkö- ja Säätölaite Oy | Construction | 2014 |
| Rovaniemen Sähkö-Zeppo Oy | Construction | 2012 |
| Rovaniemen Sähkömoottorikorjaamo Oy | Manufacturing | 1964 |
| Rovaniemen Taikasiivous Oy | Administrative & support | 2014 |
| Rovaniemen Taksiliikenne Oy | Transport & logistics | 2008 |
| Rovaniemen Taksipalvelu Oy | Transport & logistics | 1984 |
| Rovaniemen Tili- ja Verotieto Oy | Professional & scientific | 1998 |
| Rovaniemen Tilipiste Oy | Professional & scientific | 2008 |
| Rovaniemen Turkinpippuri Oy | Hospitality | 2014 |
| Rovaniemen Turvacenter Oy | Wholesale & retail | 1976 |
| Rovaniemen Verkko Oy | Energy | 2006 |
| Rovaniemen Viisaudenhammas Oy | Health & social care | 2023 |
| Rovaniemen Vuokratilat Oy | Real estate | 2014 |
| Rovaniemen VäliTili Oy | Professional & scientific | 2020 |
| Rovaniemen Väri ja Matto Oy | Wholesale & retail | 1966 |
| Rovaniemen autohuolto Oy | Other services | 2022 |
| Rovaniemen kauneus- ja hiussalonki kommandiittiyhtiö | Other services | 2001 |
| Rovaniemen optiikka Oy | Wholesale & retail | 2013 |
| Rovaniemen sähköpalvelu Oy | Construction | 2023 |
| Rovaniemi Apartments Oy | Real estate | 2025 |
| Rovaniemi Aurora Oy | Health & social care | 2020 |
| Rovaniemi Gear Rental & Luggage Storage Oy | Administrative & support | 2025 |
| Rovaniemi Insider Oy | Administrative & support | 2023 |
| Rovaniemi Running Tours Oy | Administrative & support | 2017 |
| Rovaniemi Tours Oy | Administrative & support | 2025 |
| Rovaniemi Wellness Tours Oy | Administrative & support | 2023 |
| Rovapland Resort Oy | Administrative & support | 2023 |
| Rovaservice Oy | Other services | 2017 |
| Rovaseudun Markkinakiinteistöt Oy | Real estate | 2002 |
| Rovatek Ky | Wholesale & retail | 2007 |
| Rovatennis Oy | Arts & recreation | 1987 |
| Rovatuulia Oy | Real estate | 2016 |
| Roverma Oy | Wholesale & retail | 2017 |
| Roy Service Oy | Real estate | 1999 |
| Ruoste musiikkiosuuskunta | Arts & recreation | 2014 |
| Rusamo Oy | Mining & quarrying | 2023 |
| Rusavest Oy | Financial services | 2016 |
| Ruska-Invest Oy | Real estate | 1992 |
| S Niva Oy | Construction | 2025 |
| S&R Group Oy | Hospitality | 2022 |
| S.A.Ranta Oy | Education | 2021 |
| S5 Performance Oy | Education | 2026 |
| SANDAWES Oy | Professional & scientific | 2015 |
| Santa's Golf OY | Arts & recreation | 2009 |
| SAVEL-Line Oy | Transport & logistics | 2020 |
| SCE Oy | Arts & recreation | 1997 |
| SF Logistics Oy | Transport & logistics | 2014 |
| SH Performance Oy | Other services | 2025 |
| SH Travel Oy | Administrative & support | 2025 |
| SILTA Corporation Oy | Professional & scientific | 2019 |
| SJ Nordic Oy | Education | 2026 |
| SJ Trade Oy | Wholesale & retail | 2014 |
| SJU Capital Oy | Financial services | 2024 |
| SLB Consulting Ky | Other services | 2016 |
| SMMR-Vene Oy | Administrative & support | 2026 |
| SN Liikenne Oy | Real estate | 2015 |
| SPJ Rakennus OY | Construction | 2020 |
| SPK Asunnot Oy | Real estate | 1997 |
| SRT Nuutinen Ky | Education | 1987 |
| SSC Finland Oy | Manufacturing | 2013 |
| STTP-Invest Oy | Financial services | 2024 |
| SUP Sushi oy | Hospitality | 2026 |
| SVP Capital Oy | Professional & scientific | 2025 |
| SYJ-Tilitoimisto Oy | Professional & scientific | 1988 |
| SYVIX Group Oy | Hospitality | 2026 |
| SaTa Yhtiö Oy | Professional & scientific | 2021 |
| SaVe - Rakennus Oy | Construction | 2016 |
| Saarenkylän Näkökolmio Ky | Wholesale & retail | 1994 |
| Saaruapuro Oy | Construction | 2019 |
| Sacar Oy | Other services | 2023 |