| Nye Bonderudbakken Gårdsbarnehage AS | Kolbu | 2020 |
| Nye Egenes Idrettsbarnehage AS | Stavanger | 2019 |
| Nye Focus Trafikkskole AS | Stavanger | 2025 |
| Nye Gestaltakademiet AS | Kristiansand S | 2016 |
| Nye Sgaa Eiendom AS | Stavanger | 2019 |
| Nye TMC AS | Oslo | 2021 |
| Nygård Barnehage AS | Sandane | 2014 |
| Nygårdshaugen Barnehage SA | Borgenhaugen | 1995 |
| Nyhagen Trafikkskole AS | Langhus | 2024 |
| Nyhaven Familiebarnehage AS | Grimstad | 2022 |
| Nyland Gård AS | Bruvoll | 2014 |
| Nyland Studentbarnehage AS | Alta | 2022 |
| Nylende Barnehage SA | Ytre Enebakk | 1992 |
| Nymarkbakken Fus Barnehage AS | Langevåg | 2021 |
| Nyrud Barnehage SA | Mosjøen | 1989 |
| Nysikt AS | Mo I Rana | 2012 |
| Nystrand Barnehage AS | Porsgrunn | 2007 |
| Nyttig Norsk AS | Haugesund | 2024 |
| Nytyoga AS | Oslo | 2015 |
| Nyvoll Barnehage SA | Randaberg | 2000 |
| Nyweb AS | Mandal | 2009 |
| Nzita Dialog AS | Loddefjord | 2024 |
| Nærsnes Barnehage SA | Nærsnes | 2024 |
| Nærsnes Fus Barnehage SA | Nærsnes | 1991 |
| Nærsnes Kystbarnehage AS | Nærsnes | 2005 |
| Nærvær AS | Oslo | 2019 |
| Nærøydykk AS | Indre Nærøy | 2007 |
| Nørrestogo AS | Heggenes | 2018 |
| Nøste Barnehage SA | Lier | 1996 |
| Nøtteliten Barnehage 1 AS | Kolvereid | 2024 |
| Nøtteliten Blommenholmveien AS | Oslo | 2023 |
| Nøtteliten Emma Hjort AS | Oslo | 2023 |
| Nøtteliten Fam Barnehage Dvergene AS | Haugesund | 2022 |
| Nøtteliten Fam Barnehage Skogstroll AS | Haugesund | 2022 |
| Nøtteliten Fam Barnehage Smårips AS | Haugesund | 2022 |
| Nøtteliten Fam Barnehage Trollungene AS | Haugesund | 2022 |
| Nøtteliten Familiebarnehage Ans | Larkollen | 1996 |
| Nøtteliten Familiebarnehage Skogn Da | Skogn | 2006 |
| Nøtteliten Festningsveien AS | Oslo | 2022 |
| Nøtteliten GML Drammensvei AS | Oslo | 2022 |
| Nøtteliten GML Solbergvei AS | Oslo | 2022 |
| Nøtteliten Grevlingåsen AS | Oslo | 2023 |
| Nøtteliten Hans Øverlandsvei AS | Oslo | 2022 |
| Nøtteliten Haslum Terrasse AS | Oslo | 2023 |
| Nøtteliten Høvikveien AS | Oslo | 2022 |
| Nøtteliten Kyrresvei AS | Oslo | 2022 |
| Nøtteliten Lillehagveien AS | Oslo | 2022 |
| Nøtteliten Micheletsvei AS | Oslo | 2022 |
| Nøtteliten Og Hakkebakkeskogen AS | Oslo | 2012 |
| Nøtteliten Ramstadåsveien AS | Oslo | 2023 |
| Nøtteliten Snarøyveien AS | Oslo | 2022 |
| Nøtteliten Stasjonsveien AS | Oslo | 2022 |
| Nøtteliten Storengveien AS | Oslo | 2022 |
| Nøtteliten Strandalleen AS | Oslo | 2022 |
| Nøtteliten Tveterlia AS | Oslo | 2022 |
| Nøtteliten Velliveien AS | Oslo | 2022 |
| Nøtteliten Wedel Jarlsbergsvei AS | Oslo | 2022 |
| Nøtteliten Østeråsbakken AS | Oslo | 2022 |
| Nøtterøy Islandshestesenter AS | Nøtterøy | 2022 |
| Nøysøm AS | Stavanger | 2025 |
| O. Larsen Holding AS | Skjeberg | 2019 |
| O.G.Fjone AS | Bjoneroa | 2018 |
| O.Marvik Holding AS | Oslo | 2023 |
| O2XR AS | Tromsø | 2021 |
| Oag AS | Sandefjord | 2017 |
| Oakside Holding AS | Høvik | 2020 |
| Oasen Eiendom G15 AS | Søgne | 2010 |
| Oasen Holding Søgne AS | Søgne | 2014 |
| Oasen Skole Birkelid AS | Brennåsen | 2005 |
| Oasen Skole Drammen AS | Søgne | 2018 |
| Oasen Skole Grenland AS | Skien | 2021 |
| Oasen Skole Holding AS | Søgne | 2015 |
| Oasen Skole Mandal AS | Mandal | 2013 |
| Oasen Skole Nordvest AS | Elnesvågen | 2019 |
| Oasen Skole Strømme AS | Kristiansand S | 2012 |
| Oasen Skole Vennesla AS | Vennesla | 2017 |
| Oasen Skole Vågsbygd AS | Kristiansand S | 2014 |
| Oasen Videregående Skole AS | Kristiansand S | 1996 |
| Obm Consulting AS | Tinn Austbygd | 2015 |
| Obvf AS | Oslo | 2022 |
| Ocean for the Ladies | Os | 2008 |
| Ocean Invest AS | Fosnavåg | 2018 |
| Ocean Recruitment & Competence AS | Mongstad | 2017 |
| Ocomp AS | Laksevåg | 2001 |
| Octocode | Stavanger | 2025 |
| Odal Trafikkskole AS | Kongsvinger | 2014 |
| Odal'N Montessoriskole SA | Disenå | 2013 |
| Odd Jensen Trafikkskole AS | Drammen | 1994 |
| Oddenskogen Barnehage SA | Høvik | 1995 |
| Oddskurs AS | Ikornnes | 2025 |
| Odt Norway AS | Skaun | 2019 |
| Ohana Performance Institute AS | Oslo | 2024 |
| Oiko Kurs Og Events AS | Risør | 2021 |
| Oja AS | Vannareid | 2023 |
| Ok for Mennesker AS | Rena | 2024 |
| Ok Kompetanse Agder AS | Kristiansand S | 2017 |
| Okbu Opplæringskontor Barne Og Ungdomsarbeiderfag SA | Haugesund | 2016 |
| Oks Trøndelag SA | Steinkjer | 1996 |
| Oksebakken Holding AS | Kristiansand S | 2023 |
| Oksnøen Leir Ans | Råde | 1997 |