| Sentrum Legegruppe AS | Mo I Rana | 2012 |
| Sentrum Legekontor AS | Tromsø | 1997 |
| Sentrum Legekontor Horten AS | Horten | 2023 |
| Sentrum Legekontor Legene Auflem Og Magnussen Da | Tønsberg | 2004 |
| Sentrum Legekontor Lillehammer Da | Lillehammer | 2013 |
| Sentrum Legekontor Skarnes AS | Skarnes | 2024 |
| Sentrum Legesenter Da | Sarpsborg | 2001 |
| Sentrum Legesenter I Moss Da | Moss | 2025 |
| Sentrum Legesenter Kr.Sund AS | Kristiansund N | 2013 |
| Sentrum Legesenter Kristiansand AS | Kristiansand S | 2019 |
| Sentrum Legesenter Moss Da | Moss | 2016 |
| Sentrum Legesenter Sandnes AS | Sandnes | 2024 |
| Sentrum Legesenter Skien AS | Skien | 2015 |
| Sentrum Legeservice Da | Holmestrand | 2016 |
| Sentrum Reisemedisin AS | Bergen | 2003 |
| Sentrum Reisemedisin Grimstad AS | Oslo | 2009 |
| Sentrum Tann AS | Hønefoss | 2021 |
| Sentrum Tannhelse Da | Sandefjord | 2008 |
| Sentrum Tannklinikk Alta AS | Alta | 2018 |
| Sentrum Tannklinikk AS | Larvik | 2001 |
| Sentrum Tannklinikk Porsgrunn AS | Porsgrunn | 2022 |
| Sentrum Tannklinikk Ålesund AS | Ålesund | 2024 |
| Sentrum Tannlegekontor AS | Drammen | 2001 |
| Sentrum Tannlegekontor Farahani AS | Steinkjer | 2012 |
| Sentrum Tannlegesenter AS | Oslo | 2016 |
| Sentrum Øre Nese Hals AS | Oslo | 2012 |
| Sentrum Øyeklinikk AS | Trondheim | 2002 |
| Sentrum Øyeleger AS | Oslo | 2021 |
| Sentrum-Legekontor Ans | Larvik | 2005 |
| Sentrumklinikken AS | Kristiansand S | 2011 |
| Sentrumlegene Gjøvik AS | Gjøvik | 2009 |
| Sentrumsgata Tannklinikk AS | Kolvereid | 2017 |
| Sentrumsgården Fysioterapi AS | Søgne | 1995 |
| Sentrumslegene AS | Bergen | 2007 |
| Sentrumslegene Hønefoss AS | Hønefoss | 2018 |
| Sentrumslegene I Halden Da | Halden | 2009 |
| Sentrumslegene I Notodden Da | Notodden | 2015 |
| Sentrumstannlegene AS | Tromsø | 2017 |
| Sentrumstannlegene Hønefoss AS | Røyse | 2019 |
| Sentura AS | Oslo | 2023 |
| Sepia AS | Asker | 2012 |
| Septum AS | Oslo | 2005 |
| Septum Oac AS | Oslo | 2014 |
| Ser Bra Ut AS | Oslo | 2026 |
| Serene Holding AS | Stavanger | 2024 |
| Serona Helse AS | Rognaldsvåg | 2024 |
| Serrano AS | Fjellhamar | 1998 |
| Serrianne AS | Hamar | 2012 |
| Ses Consult AS | Bergen | 2008 |
| Sesa Consulting AS | Porsgrunn | 2012 |
| Setermoen Mottak AS | Bardu | 2000 |
| Setesdal Bedriftshelsetjeneste AS | Evje | 2017 |
| Setpro Arbeid Og Inkludering AS | Evje | 2021 |
| Setpro AS | Evje | 1989 |
| Setpro Utvikling AS | Evje | 2021 |
| Setrom Holding AS | Trondheim | 2005 |
| Seva Aesthetics AS | Nittedal | 2023 |
| Sevat Løkensgard Molven AS | Hokksund | 2019 |
| Severino AS | Tromsø | 2012 |
| Sevilhaug Fysioterapi Og Manuellterapi AS | Dokka | 2016 |
| Sevita AS | Oslo | 2025 |
| Sewe AB Nuf | Se-277 40 Sankt Olof | 2024 |
| Sfit Helse AS | Gjettum | 2013 |
| Sfph AS | Nesodden | 2019 |
| SG Fysio Og Manuellterapi AS | Asker | 2018 |
| SG Medskin AS | Bekkestua | 2022 |
| SH Beauty & Sykepleiertjenester AS | Porsgrunn | 2023 |
| SH Estetikk AS | Flateby | 2025 |
| SH Gynekologi AS | Flateby | 2026 |
| SH Helse AS | Stavanger | 2016 |
| SH Naprapati & Coaching AS | Sarpsborg | 2026 |
| Sha Og HMS Rådgiveren AS | Sandefjord | 2021 |
| Sha Pro AS | Bekkestua | 2025 |
| Shahram Yalda AS | Høvik | 2022 |
| Shahzad Helsetjenester Da | Drammen | 2022 |
| Shather Holding AS | Fredrikstad | 2020 |
| Shaughnessy Ahlborg AS | Solbergelva | 2019 |
| Shayma Radi Nuf | Se-113 42 Stockholm | 2024 |
| Sheng Klinikk Ans | Glomfjord | 1996 |
| Shi AS | Oslo | 2020 |
| Shifting Focus AS | Ørnes | 2017 |
| Shipmed AS | Ålesund | 2018 |
| Shuva Israel Norge | Espa | 2000 |
| Si Logopedi AS | Kragerø | 2024 |
| Si Massasje Og Fysioterapi AS | Sørumsand | 2025 |
| Sibirius AS | Halden | 2016 |
| Sibut AS | Knapstad | 2013 |
| Siddiqui AS | Molde | 2025 |
| Sidelengs Mot Mobbing AS | Revetal | 2023 |
| Sidsel & Mari - Lifestyle Da | Laksevåg | 2023 |
| Sifs Fotpraksis AS | Deknepollen | 2017 |
| Sigbjørn Hammer AS | Trondheim | 2000 |
| Sigma 3CK AS | Kolbotn | 2012 |
| Sigma Industry East AB | Se-582 22 Linköping | 2024 |
| Signe Eriksen Helse AS | Elverum | 2007 |
| Signe Greivstad AS | Fyresdal | 2015 |
| Signe Storesund AS | Haugesund | 2006 |
| Signes Fotterapi AS | Bodø | 2023 |
| Signo Dokken AS | Bergen | 1993 |
| Signo Grantoppen AS | Andebu | 1993 |