| Lapuan Komiat Oy | Real estate | 2013 |
| Lapuan Koneasema Oy | Construction | 2009 |
| Lapuan Konevuokraus Oy | Administrative & support | 2001 |
| Lapuan Kotiasunnot Oy | Real estate | 2018 |
| Lapuan Kukka-ja Hautauspalvelu Latva-Rasula Ky | Wholesale & retail | 2013 |
| Lapuan Kuljetus Oy | Transport & logistics | 1970 |
| Lapuan Kumi ja Kone Oy | Other services | 1987 |
| Lapuan Kuntopiste oy | Arts & recreation | 2008 |
| Lapuan Leipä Oy | Manufacturing | 1972 |
| Lapuan Myllyauto Oy | Real estate | 1994 |
| Lapuan Optiikka Ky | Wholesale & retail | 1959 |
| Lapuan Palvelukotikiinteistö Ky | Health & social care | 1998 |
| Lapuan Peruna Oy | Manufacturing | 1952 |
| Lapuan Perunannosto Oy | Agriculture & fishing | 2002 |
| Lapuan Peruskivi Oy | Real estate | 2014 |
| Lapuan Pesula Oy | Other services | 1997 |
| Lapuan Putki- ja Lankatuote Oy | Manufacturing | 2008 |
| Lapuan Renessanssi Oy | Real estate | 2012 |
| Lapuan Ruostesuojaus Oy | Other services | 1997 |
| Lapuan Saha Oy | Manufacturing | 2011 |
| Lapuan Sairaankuljetus Oy | Transport & logistics | 1978 |
| Lapuan Sähköpalvelu Oy | Construction | 2011 |
| Lapuan Säästövuokraus Oy | Real estate | 2024 |
| Lapuan TKM-Rakennus Oy | Construction | 1989 |
| Lapuan Työkone Avoin yhtiö | Wholesale & retail | 2007 |
| Lapuan Valokopio Ky | Professional & scientific | 1991 |
| Lapuan Valu, Niskanen & Niskanen | Manufacturing | 1969 |
| Lapuan Vuokratilat Oy | Real estate | 2024 |
| Lapuan Yrittäjähotelli Oy | Hospitality | 1999 |
| Lapuan remonttipalvelu Ky | Construction | 1994 |
| Lapuan väri ja tapetti Ky | Wholesale & retail | 1968 |
| Lapuan Ässäkiinteistöt Oy | Construction | 1988 |
| Latomäen Sähköliike Ky | Construction | 1984 |
| Latosaari Anniskelut Oy | Hospitality | 2010 |
| Lehtimäen Betoni Oy | Manufacturing | 1984 |
| Lelukauppa Leikisti Ky | Wholesale & retail | 2010 |
| Lemmikkikauppa Vedenväki Oy | Wholesale & retail | 2021 |
| Levet Oy | Construction | 2023 |
| Liikenneopetus MSR Oy | Education | 1998 |
| Liikuntapalvelut Noste Oy | Arts & recreation | 2020 |
| Louhintaliike Ylimäki Oy | Construction | 2021 |
| Luoman Tili Ky | Professional & scientific | 1978 |
| Lysti Kirppis Oy | Wholesale & retail | 2023 |
| Lääkäripalvelu Alaviitala Oy | Health & social care | 2006 |
| M & M Klemettilä Oy | Agriculture & fishing | 1994 |
| M. Alakojola Service Oy | Manufacturing | 2020 |
| M.Mäkynen konsult.Ky | Professional & scientific | 1992 |
| M.Toppari Oy | Administrative & support | 2018 |
| MA-Tech Oy | Manufacturing | 2007 |
| MH-Tek Oy | Construction | 2018 |
| Miranda Holding OY | Real estate | 2022 |
| MM-Kenkä Ky | Wholesale & retail | 2007 |
| MM-Welding Oy | Manufacturing | 2011 |
| MMJ Rent Oy | Administrative & support | 2008 |
| MMS Nails Oy | Other services | 2026 |
| MNEcorp Oy | Manufacturing | 1994 |
| MP-Viihde Oy | Arts & recreation | 2006 |
| MT-Productivity OY | Wholesale & retail | 2023 |
| MTR-Talo Oy | Construction | 1989 |
| Maalaustyö Haapa-ahot avoin yhtiö | Construction | 2010 |
| Maanrakennus Saari Oy | Construction | 1982 |
| Maderas Invierte Oy | Real estate | 2003 |
| Mainostalo PrintLink Ky | Professional & scientific | 2013 |
| Mainostoimisto Pasi Tuomaala Oy | Professional & scientific | 2022 |
| Maint Way Oy | Manufacturing | 2011 |
| Majoitusovi Finland Oy | Wholesale & retail | 2016 |
| Mallaskuun Panimo Oy | Manufacturing | 2015 |
| Manteres' Oy | Wholesale & retail | 1988 |
| Mari Kalliolahti-Oja Oy | Health & social care | 2024 |
| Marianna Lehto Oy | Health & social care | 2024 |
| Martti Jylhä Ky | Manufacturing | 1978 |
| Masala Garden Oy | Real estate | 2020 |
| Matkatoimisto Saarikoski Oy | Administrative & support | 1998 |
| Matseco Oy | Construction | 2008 |
| Matti Keltto Oy | Agriculture & fishing | 2022 |
| Mery Oy | Real estate | 2016 |
| Metal-Botnia Oy | Manufacturing | 1985 |
| Metek Oy | Wholesale & retail | 1989 |
| Metsäpalvelu Kytöharju Oy | Agriculture & fishing | 2019 |
| Mever Oy | Manufacturing | 1984 |
| MiNatur Ky | Agriculture & fishing | 2008 |
| MiSeHeHe Holding Oy | Real estate | 2015 |
| Miialan Kiinteistöt Oy | Real estate | 1997 |
| Mikko Ylimäki Oy | Construction | 2018 |
| Mimilii Ky | Education | 2011 |
| Mobiconverge Oy | Information & communication | 2008 |
| Monetpa Oy | Other services | 2015 |
| Mototrade Finland Oy | Wholesale & retail | 2009 |
| Mykey Ky | Wholesale & retail | 2011 |
| Mäkelä Welding Oy | Manufacturing | 2022 |
| Möttiäänen Oy | Health & social care | 2020 |
| Naistenpukimo Raija Lahdensuo Ky | Wholesale & retail | 1991 |
| Nammo Lapua Oy | Manufacturing | 1998 |
| Napatupa Oy | Real estate | 1978 |
| Neuvokas Group Oy | Health & social care | 2022 |
| Niinistö Consulting Oy | Administrative & support | 2003 |
| NordLog Oy | Wholesale & retail | 2009 |
| Nordic Blinds Oy | Wholesale & retail | 2023 |
| Nordic Commerce Holdings Oy | Professional & scientific | 2023 |
| Nordic Distribution Oy Nordis | Wholesale & retail | 2000 |