| Pema AS | Real estate | 2001 |
| Per & Pål Eiendom AS | Real estate | 1985 |
| Per Arne Holding AS | Real estate | 2015 |
| Per Arne Høiby Invest AS | | 2023 |
| Per Invest AS | Financial services | 2005 |
| Perlen 1 Eiendom AS | Real estate | 2023 |
| Personal Computer Support Ans | | 1991 |
| Pinnerudvegen Holding AS | Real estate | 2021 |
| PM Innlandet Eiendom AS | Real estate | 2018 |
| Portalen Legesenter Da | Health & social care | 2008 |
| Positiv Utvikling AS | Real estate | 2014 |
| Powermate Norge AS | Wholesale & retail | 2015 |
| PP Brumunddal AS | Hospitality | 2018 |
| Ppa Eiendom AS | Real estate | 2020 |
| Ppa Silva Invest AS | Real estate | 2024 |
| PR - Praktisk Realfag AS | Education | 2017 |
| Prima Sol AS | Construction | 2022 |
| Profilpartner Norge AS | Wholesale & retail | 2001 |
| Proform Garderobe AS | Wholesale & retail | 2021 |
| Proform Kjøkkenfornyelse AS | Wholesale & retail | 2017 |
| Property V AS | Real estate | 2021 |
| Prosjekt-Konsult AS | Professional & scientific | 2005 |
| Providor AS | Health & social care | 1994 |
| PS Eiendom & Håndverk AS | | 2026 |
| Pål Hagen Holding AS | Real estate | 2014 |
| Pål Invest AS | Financial services | 2005 |
| R & G Invest AS | Manufacturing | 2019 |
| R-K Holding AS | Wholesale & retail | 2006 |
| R17 Holding AS | Real estate | 2019 |
| Raabe AS | | 2011 |
| Rafos Entreprenør AS | Construction | 2011 |
| Rafos Holding AS | Construction | 2011 |
| Rahøyen Holding AS | Professional & scientific | 2017 |
| Raibow Sushi Og Wok AS | Hospitality | 2026 |
| Rakettkongen Da | Wholesale & retail | 2004 |
| Randkleivgata 6 AS | Real estate | 2021 |
| RB Montasje AS | Construction | 2019 |
| Reif AS | | 2023 |
| Reiman Eiendom AS | Real estate | 2014 |
| Reiman Holding AS | Real estate | 2016 |
| Reiser.No AS | Information & communication | 2022 |
| Relasjons-Glede AS | Other services | 2026 |
| Renseriservice AS | Other services | 2009 |
| Renseriservice Hamar AS | Other services | 2019 |
| Restauranthuset Alexandra Ans | Hospitality | 1994 |
| Revion Group AS | Professional & scientific | 2025 |
| Rhak Invest AS | | 2022 |
| Ricardo Eiendom AS | Real estate | 2021 |
| Ricardo Holding AS | Professional & scientific | 2020 |
| Ricardofoto AS | Professional & scientific | 2011 |
| Rimo Eiendom AS | Real estate | 1996 |
| Rimo Holding AS | Real estate | 2005 |
| Ringsaker Blikk Og Ventilasjon AS | Construction | 1990 |
| Ringsaker Eiendom AS | Real estate | 1996 |
| Ringsaker Jakt- Og Fiskeområde Da | Real estate | 1966 |
| Ringsaker Næringspark AS | | 2007 |
| Ringsaker Sauebeitelag SA | Agriculture & fishing | 1956 |
| Ringsaker Ved Og Utleie AS | Administrative & support | 2025 |
| Ringsaker Vedterminal Da | Agriculture & fishing | 2004 |
| Ringsaker Vekst AS | Professional & scientific | 1992 |
| Ringsakervegen 11/13 AS | Real estate | 1973 |
| Ringsakervegen 17 AS | Real estate | 2025 |
| Ringsakervegen 9 AS | Real estate | 2026 |
| Rio AS | Wholesale & retail | 1972 |
| Rio Eiendom AS | Real estate | 2002 |
| Rio Holding AS | Real estate | 2005 |
| RK Transport AS | Transport & logistics | 2006 |
| Rmo Holding AS | Financial services | 2005 |
| Roar Johansen Transport AS | Transport & logistics | 2006 |
| Rocktower Management AS | Professional & scientific | 2017 |
| Rofro Holding AS | Real estate | 2015 |
| Rogers Lyd Og Bilde AS | Wholesale & retail | 2005 |
| Rom for Rom Interiør AS | Professional & scientific | 2014 |
| Ronny Karlsen AS | Wholesale & retail | 2025 |
| Rora Construction AS | Professional & scientific | 2020 |
| RS Mopar AS | Real estate | 2020 |
| RSL Invest AS | Wholesale & retail | 2016 |
| RSL Online AS | Wholesale & retail | 2017 |
| Rudshøgda Veiservice AS | Hospitality | 1998 |
| Rustand Eiendom AS | Real estate | 1980 |
| Rustand Midlertidig AS | Real estate | 2026 |
| Ruud Consulting AS | Wholesale & retail | 2022 |
| Rykop AS | | 2022 |
| Røhr Gård Wagyu AS | Manufacturing | 2022 |
| Rørlegger Christopher Trampe-Kindt AS | Construction | 2025 |
| S.Ø.R. Entreprenør AS | Construction | 2021 |
| S46 Lillehammer Holding AS | Real estate | 2022 |
| Sagåvegen AS | Real estate | 2022 |
| Salong Luggen AS | Other services | 2013 |
| Salong Mølla AS | Other services | 2014 |
| Saltvann AS | Real estate | 2021 |
| Sanfo AS | Construction | 2010 |
| Scandic Vindu AS | Wholesale & retail | 2020 |
| Scanrise Pte Ltd | Professional & scientific | 2011 |
| Sem Consulting AS | | 2020 |
| Service Og Montasje AS | Construction | 2018 |
| Setteløk AS | Agriculture & fishing | 2026 |
| SFK Graving AS | Administrative & support | 2008 |
| SFK Holding AS | Real estate | 2008 |
| Sham Akkam AS | Wholesale & retail | 2018 |