| Lille Langerud AS | Real estate | 2025 |
| Lille Langerud Garasjer AS | Real estate | 1949 |
| Lille Locomotivet AS | Real estate | 1997 |
| Lille Lumander SA | Other services | 2023 |
| Lille Marmaris AS | Hospitality | 2021 |
| Lille Marrakech AS | Wholesale & retail | 2016 |
| Lille My Familiebarnehage Bestumveien AS | Education | 2024 |
| Lille My Holding AS | | 2024 |
| Lille Nesttunvann AS | Real estate | 2018 |
| Lille Nesttunvann Holding AS | Real estate | 2025 |
| Lille O AS | Hospitality | 2021 |
| Lille Oslo 10 AS | Real estate | 2025 |
| Lille Oslo 9 AS | Real estate | 2025 |
| Lille Oslo Eiendom AS | Real estate | 2018 |
| Lille Oslo Kaffebrenneri AS | Manufacturing | 2023 |
| Lille Oslo Partners AS | Real estate | 2021 |
| Lille P. Holding AS | Hospitality | 2009 |
| Lille Persille Familiebarnehage AS | | 2008 |
| Lille Pingvin AS | Information & communication | 2021 |
| Lille Populær AS | Wholesale & retail | 2003 |
| Lille Puré AS | Manufacturing | 2017 |
| Lille Sitha Cafe AS | Hospitality | 2025 |
| Lille Smedparken AS | Real estate | 2022 |
| Lille Svalsund Cafe Ans | Hospitality | 2008 |
| Lille Troende Ans | Arts & recreation | 2025 |
| Lille Trollbu AS | | 2022 |
| Lille Tschudi Holding AS | | 2023 |
| Lille Tun AS | Real estate | 2005 |
| Lille Valkyrien Og Meg AS | Wholesale & retail | 2011 |
| Lille Valle Holding AS | | 2023 |
| Lille Valle Rådgivning AS | Professional & scientific | 2022 |
| Lille Venn Familiebarnehage AS | Education | 2013 |
| Lille Viken Eiendom AS | Real estate | 2021 |
| Lille Villa AS | Real estate | 2025 |
| Lille Vinkel Sko AS | Wholesale & retail | 1984 |
| Lille Øvregaten 20C AS | Real estate | 2015 |
| Lille.Lord AS | Information & communication | 2017 |
| Lilleaker AS | Real estate | 2015 |
| Lilleaker Auto Senter AS | Wholesale & retail | 1990 |
| Lilleaker Beauty Klinikken AS | Other services | 2025 |
| Lilleaker Bolig AS | Real estate | 2018 |
| Lilleaker Boligutvikling AS | Real estate | 2014 |
| Lilleaker Energi AS | Energy | 2022 |
| Lilleaker Infrastruktur AS | Real estate | 2018 |
| Lilleaker Næring AS | Real estate | 2018 |
| Lilleaker Panorama AS | Real estate | 2017 |
| Lilleaker Parkering AS | Real estate | 2018 |
| Lilleaker Prosjekt AS | Real estate | 2018 |
| Lilleaker Prosjektutvikling AS | Real estate | 2011 |
| Lilleaker Service AS | Hospitality | 2019 |
| Lilleaker Spesialistlegesenter AS | Health & social care | 2018 |
| Lilleaker Tannklinikk AS | Health & social care | 2022 |
| Lilleakerveien 14 AS | Real estate | 2025 |
| Lilleakerveien 32B AS | Real estate | 2019 |
| Lilleakerveien 45 AS | Real estate | 2017 |
| Lilleakerveien 48 AS | Real estate | 1966 |
| Lilleakerveien AS | Real estate | 2019 |
| Lillebekk Holding AS | Real estate | 2016 |
| Lilleberg Garasjelag SA | Real estate | 2018 |
| Lilleberg Invest AS | | 2019 |
| Lillebischj AS | Professional & scientific | 2005 |
| Lillebom AS | | 2026 |
| Lilleborg AS | Wholesale & retail | 2020 |
| Lilleborg Legekontor AS | Health & social care | 2024 |
| Lillebror AS | Financial services | 1994 |
| Lilleby & Co AS | Professional & scientific | 2025 |
| Lilleby Holding AS | | 2016 |
| Lilleby Triangel Næring Eiendom AS | Real estate | 2018 |
| Lilleeng AS | Real estate | 2013 |
| Lillefix AS | Professional & scientific | 2017 |
| Lillefot AS | Wholesale & retail | 2015 |
| Lillegrims Knekk & Brekk AS | Health & social care | 2021 |
| Lillegull AS | | 2025 |
| Lillehammer Byggmontasje AS | Real estate | 2024 |
| Lillehammer Eiendom Da | Real estate | 1999 |
| Lillehammer Etatbygg AS | Financial services | 2020 |
| Lillehammer Handelseiendom AS | Real estate | 2016 |
| Lillehammer Politibygg AS | Real estate | 2005 |
| Lillehammer Portal AS | Real estate | 2020 |
| Lillehammer Science Park AS | Real estate | 2025 |
| Lilleheie & Sønn AS | Arts & recreation | 2020 |
| Lilleheim AS | | 2022 |
| Lillehjell Invest AS | | 2021 |
| Lillekampen Kafe AS | Hospitality | 2018 |
| Lillekontoret Ans | | 2026 |
| Lillelam AS | Wholesale & retail | 2004 |
| Lillelaser - Din Kosmetiske Klinikk AS | Other services | 2022 |
| Lillelund AS | | 2022 |
| Lillenes Invest AS | Real estate | 2017 |
| Lillesetra AS | | 2015 |
| Lillestrøm by Og Næringsutvikling AS | Real estate | 2011 |
| Lillestrøm Indrefileten AS | Real estate | 2004 |
| Lillestrøm Montessoriskole AS | Education | 2026 |
| Lillestrøm Sentrumsbolig AS | Real estate | 2014 |
| Lillesveen AS | Information & communication | 2020 |
| Lillesøster Interiør AS | Wholesale & retail | 2011 |
| Lillethun Capital AS | | 2023 |
| Lilletind AS | | 2016 |
| Lilletorget 1 AS | Real estate | 1979 |
| Lilletorget Legekontor Da | Health & social care | 2014 |