| Lillehammer Dental AS | Manufacturing | 1990 |
| Lillehammer Dyreklinikk AS | Professional & scientific | 2009 |
| Lillehammer Eiktrapp AS | Manufacturing | 2023 |
| Lillehammer Elektro AS | Construction | 2013 |
| Lillehammer Fjellstue Og Hytteutleie AS | Hospitality | 1989 |
| Lillehammer Flytteservice I Hele Innlandet Al Mubarak AS | Administrative & support | 2026 |
| Lillehammer Fotballhall AS | Arts & recreation | 2017 |
| Lillehammer Fritid- Og Aktivitetssenter AS | Education | 2021 |
| Lillehammer Fysioterapi AS | Health & social care | 2025 |
| Lillehammer Helse & Ernæring AS | Manufacturing | 2023 |
| Lillehammer Hobbyforretning Ans | Wholesale & retail | 1993 |
| Lillehammer Housing AS | Real estate | 2019 |
| Lillehammer Hud Og Velvære AS | Other services | 2011 |
| Lillehammer Industrisalg AS | Wholesale & retail | 2001 |
| Lillehammer Innredning AS | Wholesale & retail | 2023 |
| Lillehammer Invest AS | Real estate | 1985 |
| Lillehammer Kaffebrenneri AS | Manufacturing | 2026 |
| Lillehammer Kjøleservice Ans | Wholesale & retail | 1990 |
| Lillehammer Kommunale Eiendomsselskap AS | Real estate | 1999 |
| Lillehammer Kosmetiske Hudklinikk AS | Other services | 2005 |
| Lillehammer Kulde AS | Construction | 2011 |
| Lillehammer Kultur AS | Financial services | 1992 |
| Lillehammer Kunstglass Da | Manufacturing | 1985 |
| Lillehammer Laserklinikk AS | Health & social care | 2017 |
| Lillehammer Legesenter Da | Health & social care | 2007 |
| Lillehammer Lekeland AS | Arts & recreation | 2022 |
| Lillehammer Liftutleie AS | Administrative & support | 2013 |
| Lillehammer Live AS | Arts & recreation | 2017 |
| Lillehammer Lyd Og Lys AS | Arts & recreation | 2013 |
| Lillehammer Lås- Og Eiendomsservice AS | Administrative & support | 2019 |
| Lillehammer Media AS | Information & communication | 2006 |
| Lillehammer Mikrobryggeri AS | Hospitality | 2013 |
| Lillehammer Mobilreparasjon AS | Other services | 2017 |
| Lillehammer Mur & Flis AS | Construction | 2003 |
| Lillehammer Nevropsykologi AS | Health & social care | 2022 |
| Lillehammer Olympiapark AS | Arts & recreation | 1990 |
| Lillehammer Osteopati AS | Health & social care | 2013 |
| Lillehammer Panorama V AS | Real estate | 2020 |
| Lillehammer Parkering AS | Professional & scientific | 2018 |
| Lillehammer Pizzeria Og Ristaurante Ans | Hospitality | 2003 |
| Lillehammer Pizzeria Og Ristaurante AS | Hospitality | 2015 |
| Lillehammer Restaurantselskap Ans | Hospitality | 1994 |
| Lillehammer Rørservice AS | Construction | 2025 |
| Lillehammer Sentrum Drift AS | Other services | 1986 |
| Lillehammer Sentrum Panorama AS | Real estate | 2013 |
| Lillehammer Snekker Og Vaktmesterservice AS | Construction | 2025 |
| Lillehammer Snekkertjenester AS | Construction | 2025 |
| Lillehammer Spa AS | Other services | 2019 |
| Lillehammer Sport AS | Wholesale & retail | 2001 |
| Lillehammer Stillasutleie AS | Administrative & support | 2004 |
| Lillehammer Sushi AS | Hospitality | 2025 |
| Lillehammer Sæter AS | Real estate | 2003 |
| Lillehammer Taarn AS | Real estate | 2014 |
| Lillehammer Tak AS | Construction | 2018 |
| Lillehammer Takst AS | Real estate | 2023 |
| Lillehammer Taxisentral AS | Transport & logistics | 1997 |
| Lillehammer Tekniske Byrå AS | Wholesale & retail | 2022 |
| Lillehammer Tepperens Ans | Other services | 1993 |
| Lillehammer Tradisjonshåndverk AS | Hospitality | 2021 |
| Lillehammer Trafikkskole AS | Education | 2022 |
| Lillehammer Trefelling AS | Agriculture & fishing | 2026 |
| Lillehammer Trelast AS | Real estate | 2011 |
| Lillehammer Turistsenter AS | Hospitality | 1994 |
| Lillehammer Ung Og Aktiv AS | Health & social care | 2012 |
| Lillehammer Utvikling AS | Professional & scientific | 2019 |
| Lillehammer Varmesenter AS | Wholesale & retail | 2019 |
| Lillehammer Vaskservice Da | Administrative & support | 2011 |
| Lillehammer Velvære AS | Other services | 2016 |
| Lillehammer Ventilasjon AS | Construction | 1990 |
| Lillehammer Vinduspuss AS | Administrative & support | 2022 |
| Lillehammer Winter Sport Consulting AS | Professional & scientific | 2019 |
| Lillehammer Zoo AS | Wholesale & retail | 2019 |
| Lillehammer Øre-Nese-Hals AS | Health & social care | 2009 |
| Lillehammerfjellet Tur- Og Løypeselskap SA | Arts & recreation | 2004 |
| Lillesopp Da | Agriculture & fishing | 2026 |
| Lilletorvet Invest AS | Real estate | 1973 |
| Lillwax Center Lillehammer AS | Other services | 2017 |
| Lilly Marked AS | Wholesale & retail | 2014 |
| Lillywood AS | Information & communication | 2020 |
| Limpi AS | Education | 2015 |
| Linn Vesterås AS | Wholesale & retail | 2025 |
| Lipro AS | Health & social care | 1963 |
| Lipro Kompetanse AS | Health & social care | 2017 |
| Lisbeth Bøhler Holding AS | | 2024 |
| Listadgården AS | Real estate | 2025 |
| Lithos Consulting AS | Professional & scientific | 2026 |
| Litra Containerservice AS | Water & waste | 2007 |
| Livefast AS | Wholesale & retail | 2012 |
| Livibevegelse AS | Health & social care | 2016 |
| Liwlig Conference AS | Administrative & support | 1988 |
| Ljøshaugen AS | Financial services | 2006 |
| LM Byggprosjekt AS | Construction | 2021 |
| LM Takservice Da | Construction | 1989 |
| Lobe Eiendom AS | Real estate | 2019 |
| Lodge Eiendom AS | Real estate | 2022 |
| Logscom AS | Wholesale & retail | 2022 |
| Lokalgrønt AS | Agriculture & fishing | 2022 |
| Lokallager AS | Real estate | 2022 |
| Lole Industries AS | Real estate | 2008 |
| Lom Eiendom AS | Real estate | 2008 |