| Kulmasen Kiviveistämö Oy | Manufacturing | 1992 |
| Kulttuuriosuuskunta Pro Orivesi | Other services | 2019 |
| Kuntokeskus Kuntokuume Oy | Arts & recreation | 2017 |
| Kylkilahti avoin yhtiö | Manufacturing | 1996 |
| Liinamaa Racing OY | Wholesale & retail | 2013 |
| LMRA Rakennus Oy | Construction | 2026 |
| LVI-asennus ja rakennuspalvelu Oy Inkinen & Orsama | Construction | 1990 |
| Lakos Team Oy | Agriculture & fishing | 1995 |
| Lampark Oy | Wholesale & retail | 1997 |
| LattiaX oy | Construction | 2025 |
| Lea-D Oy | Professional & scientific | 2019 |
| Leal Oy | Transport & logistics | 2008 |
| Lehti Invest Oy | Real estate | 2011 |
| Leppälä & Suhonen Ky | Wholesale & retail | 1990 |
| Lestihammas Oy | Health & social care | 2018 |
| Lightbox Media Oy | Construction | 1989 |
| LiiSi Capital Oy | Real estate | 2025 |
| Liikennekoulutus Jani Oy | Education | 2021 |
| Liinamaa Invest Oy | Real estate | 2017 |
| Lähettipalvelu Ky Oksavuori | Transport & logistics | 1994 |
| Lämpö Oy Kaupinrinne | Energy | 1965 |
| Längelmäveden Venematkat Oy | Transport & logistics | 2009 |
| M-Shoe Makers Oy | Manufacturing | 1981 |
| MJ Pack Group Oy | Professional & scientific | 2025 |
| MJ Pakkaus Oy | Wholesale & retail | 2014 |
| MJM-Sähkö Oy | Construction | 2013 |
| MR Merkkaus Oy | Manufacturing | 2018 |
| MTS House Oy | Real estate | 2015 |
| Maanrakennus Riihimäki Oy | Construction | 2018 |
| Maestros del tango Pirttilahti & Westergård | Arts & recreation | 2012 |
| Majuri Kiinteistöt Oy | Real estate | 2022 |
| Martof Oy | Wholesale & retail | 2010 |
| Maxiauto Oy Orivesi | Wholesale & retail | 2007 |
| Metsä-Tuominen Oy | Agriculture & fishing | 1989 |
| Mikon Tila Oy | Construction | 2016 |
| Mirira invest Oy | Real estate | 2020 |
| MyWater Global Oy Ltd | Manufacturing | 2022 |
| Mäkinen & Pojat Oy | Agriculture & fishing | 2025 |
| Mäntän Kauppahuone Oy | Construction | 1993 |
| Naksippeli Oy | Administrative & support | 2017 |
| New Era Tanssikoulut Ky | Arts & recreation | 1977 |
| Niittykodit Oy | Real estate | 2026 |
| Nord Vans Oy | Other services | 2026 |
| Northgulf Oy | Hospitality | 2019 |
| Noumoor Oy | Other services | 2019 |
| Oiva ratkaisut Oy | Wholesale & retail | 2020 |
| OneSup Oy | Administrative & support | 2021 |
| OriGym Oy | Arts & recreation | 2012 |
| OriMeko Oy | Other services | 2026 |
| Oricopa Kiinteistöt Oy | Real estate | 2010 |
| Oridea Oy | Manufacturing | 2021 |
| Orident Oy | Health & social care | 2005 |
| Oriflex Oy | Financial services | 1983 |
| Orifood Oy | Hospitality | 2008 |
| Oriveden Auto Oy | Wholesale & retail | 1953 |
| Oriveden Autohuolto- ja tarvike I. Koskinen & Kumpp. | Other services | 1983 |
| Oriveden Fysioterapia Ky | Health & social care | 2007 |
| Oriveden Jäähalli Oy | Real estate | 1997 |
| Oriveden Kalastustarvike, avoin yhtiö | Manufacturing | 1991 |
| Oriveden Kotikoivu Oy | Real estate | 1989 |
| Oriveden Kumikorjaamo Ky | Wholesale & retail | 1979 |
| Oriveden Käyttölasi Ky | Real estate | 1983 |
| Oriveden Lääkäriasema Oy | Health & social care | 2009 |
| Oriveden Monitoimi Oy | Construction | 2013 |
| Oriveden Muotineule Oy | Wholesale & retail | 1988 |
| Oriveden Osto- ja myyntiliike Oy | Wholesale & retail | 2017 |
| Oriveden Paahtimo Oy | Manufacturing | 2010 |
| Oriveden Peltisepänliike Oy | Construction | 1977 |
| Oriveden Pyörä Oy | Wholesale & retail | 1993 |
| Oriveden Ravintolaliike Oy | Hospitality | 2024 |
| Oriveden Sammutinhuolto Leppämäki Oy | Manufacturing | 1991 |
| Oriveden Sport-Rengas Ky | Wholesale & retail | 1987 |
| Oriveden Taulu ja Kehys Oy | Wholesale & retail | 2026 |
| Oriveden Tili- ja Kiinteistöpalvelu Oy | Professional & scientific | 1994 |
| Oriveden Väri Oy | Wholesale & retail | 2008 |
| Oriveden auto- ja rautapaja Oy | Other services | 1987 |
| Oriveden keskustan taksit avoin yhtiö | Transport & logistics | 2001 |
| Oriveden vanha Kiwilinna Oy | Real estate | 2011 |
| Orivesi-talo Oy | Real estate | 2013 |
| Orneule Oy | Manufacturing | 1985 |
| Osuuskunta Työjuhdat | Other services | 1999 |
| Oy AgroMan Ab | Transport & logistics | 2023 |
| P. Koskinen Oy | Administrative & support | 2008 |
| Pajari invest group Oy | Professional & scientific | 2024 |
| Palagent Oy | Information & communication | 2025 |
| Peheko Avoin yhtiö | Manufacturing | 1986 |
| Pekka Helén Ky | Manufacturing | 1996 |
| Perhekoti Oksanen Oy | Health & social care | 2011 |
| Peroma Oy | Real estate | 1988 |
| PerttulaMaatalous Oy | Agriculture & fishing | 2025 |
| Pesako Oy | Construction | 2019 |
| Petäjänterveys Oy | Health & social care | 2023 |
| Piikki-Siili Oy | Administrative & support | 2013 |
| Pirkanmaan FarmiApu Oy | Agriculture & fishing | 2015 |
| Pirkanmaan Graniitti Oy | Manufacturing | 2025 |
| Pirkanmaan Sähköurakointi Oy | Construction | 2016 |
| Pirkanmaan VenePiste Oy | Manufacturing | 2018 |
| Pirkko-kiinteistöt Oy | Real estate | 1982 |
| Pitkäpohja Oy | Manufacturing | 2015 |
| Profido Oy | Other services | 2021 |