| 1435 Nelly Palonen Oy | Wholesale & retail | 2016 |
| A. Kalke Oy | Transport & logistics | 2001 |
| Armet Oy | Construction | 2019 |
| Chevalinn Oy | Agriculture & fishing | 2007 |
| EK-Kaide Oy | Manufacturing | 2014 |
| Haarajoen Siivous Oy | Administrative & support | 1978 |
| Helsingin Konehuolto Oy | Other services | 1995 |
| Horse Haytec Oy | Manufacturing | 2019 |
| Insinööritoimisto Tikkanen Oy | Professional & scientific | 2017 |
| Iskusaneeraus Oy | Construction | 1986 |
| JAIM Oy | Wholesale & retail | 2014 |
| JM LIIKUNTAPALVELUT avoin yhtiö | Education | 2015 |
| Jalkaterapia Pirkko Naukkarinen Oy | Health & social care | 1986 |
| Juomalaitehuolto Jouko Hietala Oy | Manufacturing | 1999 |
| K-S Kaluste Oy | Wholesale & retail | 2007 |
| KKW Myynti ja Palvelu Oy | Administrative & support | 1991 |
| KS-Log Oy | Real estate | 2021 |
| KataVisions Oy | Professional & scientific | 2023 |
| Kehäkaivuu Oy | Construction | 2012 |
| Kenmar Rakennus Oy | Construction | 2007 |
| Kiinteistö Oy Tuusulan Kollarinkuja 10 | Real estate | 2002 |
| Konsol Trade Asennus Oy | Construction | 2012 |
| Kuljetusliike Orpana Oy | Transport & logistics | 2006 |
| Kuljetusliike Timo Liukkonen Ky | Transport & logistics | 1994 |
| Kulttuuripaja Kasper Avoin yhtiö | Arts & recreation | 1997 |
| LFS Services Oy | Other services | 2021 |
| Lisete OY | Administrative & support | 2019 |
| LVI Koivu Oy | Construction | 2013 |
| M. Kukkanen Oy | Wholesale & retail | 2009 |
| MultaMafia Oy | Construction | 2024 |
| NSM-House Oy | Professional & scientific | 2002 |
| Nauravat Nokinenät Ky | Administrative & support | 2003 |
| Once Upon a Time in Finland Oy | Information & communication | 2000 |
| Osuuskunta Tuusulan Valokuidut | Construction | 2015 |
| PHPipe Oy | Construction | 2015 |
| Palvelut Salminen Oy | Administrative & support | 2003 |
| Peacemakers Oy | Wholesale & retail | 1995 |
| Photour Oy | Professional & scientific | 2014 |
| Pointware Oy | Information & communication | 2006 |
| Proest Oy | Construction | 2020 |
| Puuturtle Oy | Construction | 2009 |
| Scaro Oy | Wholesale & retail | 2026 |
| Soraliike Heikki ja Raija Åberg | Mining & quarrying | 1969 |
| Timanttiporaus Mig OY | Construction | 2012 |
| TP HiusStara Oy | Other services | 2015 |
| TVH Transport Oy | Transport & logistics | 2022 |
| Teho Saneeraus K&K Oy | Construction | 2012 |
| Tilikaakkuri Oy | Professional & scientific | 2006 |
| Tuus kaivuu Oy | Construction | 2009 |
| Tötteröhattu Oy | Construction | 2022 |
| Uusiomurske EM Oy | Administrative & support | 1990 |
| VJL kuljetus ja koneurakointi Ky | Transport & logistics | 2004 |
| Yritys-Talentit Oy | Professional & scientific | 1990 |