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| Schenker Equipment AB | Se-422 46 Hisings Backa | 2023 |
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| SCN - Seaplane Charters North AS | Bergen | 2019 |
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| Scotjakt AS | Neslandsvatn | 2020 |
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| Seabound AS | Myre | 2026 |
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| Seafood Legacy AS | Frekhaug | 2018 |
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| Seaway 7 Norway AS | Oslo | 2022 |
| Seaway Heavy Lifting Contracting Limited | Cy-3035 Limassol | 2015 |
| Seaway Heavy Lifting Engineering BV | 2719Er Zoetermeer | 2015 |
| Seaway Heavy Lifting Offshore Crew | 3719Er Zoetermeer | 2015 |
| Seaweis AS | Longyearbyen | 2013 |
| Sebergsen Eiendom AS | Skjervøy | 2025 |
| Sebleke Båtutleie AS | Hjellestad | 2018 |
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| SEC1 AS | Verdal | 2024 |
| Secale AS | Kvelde | 2022 |
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| Second Voice AS | Oslo | 2023 |
| Secret Bergen AS | Rådal | 2021 |
| Secret Gardens Oslo AS | Råholt | 2026 |
| Sector Alarm Als AS | Oslo | 2015 |
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| Sector Alarm Drift AS | Oslo | 2015 |
| Sector Alarm Holding AS | Oslo | 2005 |
| Sector Alarm Ireland AS | Oslo | 2013 |
| Sector Alarm Midco AS | Oslo | 2018 |
| Sector Alarm Spain AS | Oslo | 2008 |
| Sector Alarm Tech AS | Oslo | 2018 |
| Sector Alarm Topco AS | Oslo | 2018 |
| Sector SPV AS | Oslo | 2018 |
| Secura AS | Oslo | 2014 |
| Secure Connected AS | Ålesund | 2008 |
| Securinor AS | Laksevåg | 2017 |
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