| Stahøv SA | Transport & logistics | 1979 |
| Starwalk AS | Professional & scientific | 1995 |
| Stavrum Invest AS | | 2019 |
| Steinan Nedre Newco AS | Real estate | 2021 |
| Steinan Nedre Utbygging AS | Real estate | 2015 |
| Stenheim & Partners AS | | 2024 |
| Stenlakse AS | Real estate | 2004 |
| Stig Foss Invest AS | | 2025 |
| Storøykilen Utvikling AS | Real estate | 2020 |
| Strafelaten AS | | 2023 |
| Strandgaten 9 Son AS | | 1986 |
| Streams AS | Information & communication | 2020 |
| Streams Services AS | Information & communication | 2021 |
| Strikkemagi AS | Wholesale & retail | 2018 |
| Studentum AS | Professional & scientific | 2010 |
| Study Outside Norway AS | Other services | 2000 |
| Støfring Investments AS | Information & communication | 2021 |
| Støme Eiendom AS | Real estate | 2012 |
| Størdal Holding AS | | 2019 |
| Suelo AS | Professional & scientific | 2005 |
| Sulu Invest AS | | 2021 |
| Sunease AS | Construction | 2022 |
| Sunease Holding AS | Construction | 2022 |
| Sunstone Capital AS | Financial services | 2021 |
| Supernode Holding AS | Manufacturing | 2020 |
| Superoptimisten AS | | 2025 |
| Superspirer AS | Manufacturing | 2015 |
| Surgemet AS | Professional & scientific | 2024 |
| Sushi Huset Fornebu AS | Hospitality | 2012 |
| Syssel Holding AS | Information & communication | 2022 |
| Systems Solutions AS | Professional & scientific | 2016 |
| Sæther & Sørnæs AS | Wholesale & retail | 1986 |
| Søgnesand Bygg Ans | Construction | 2012 |
| Sønnavindar Offshore Wind AS | Energy | 2020 |
| Søvik Invest AS | Wholesale & retail | 2005 |
| T. London AS | Real estate | 2025 |
| Takt Studio AS | Professional & scientific | 2023 |
| Taktileksperten AS | Professional & scientific | 2024 |
| Tandem AS | Professional & scientific | 1988 |
| Tannbuen AS | Health & social care | 2005 |
| Tannlege Og Spesialistsenteret Fornebu AS | Health & social care | 2023 |
| Tannlegene På Fornebu AS | Health & social care | 2016 |
| Target Aid Norway AS | Wholesale & retail | 2024 |
| TC Labs AS | Information & communication | 2026 |
| TCP Circular AS | Professional & scientific | 2025 |
| Te Connectivity Norge AS | Professional & scientific | 1987 |
| Techie AS | Real estate | 2019 |
| Technopolis Holding AS | Real estate | 2013 |
| Technorocks AS | Professional & scientific | 2011 |
| Teide AS | Financial services | 2005 |
| Tekbot AS | Wholesale & retail | 2022 |
| Teknologiverket AS | Information & communication | 2026 |
| Telenor Agder Vestfold Og Telemark 2 AS | Real estate | 2020 |
| Telenor AI Factory Norway AS | Professional & scientific | 2024 |
| Telenor ASA | Information & communication | 2000 |
| Telenor Asia Holding AS | Information & communication | 2023 |
| Telenor Communication II AS | Information & communication | 2001 |
| Telenor Consult AS | Information & communication | 1991 |
| Telenor Cyberdefence AS | Information & communication | 2024 |
| Telenor Digital Infrastructure Holding AS | Information & communication | 2023 |
| Telenor Eiendom Hareløkken AS | Information & communication | 1999 |
| Telenor Festekontrakter AS | Information & communication | 2019 |
| Telenor Fiber AS | Information & communication | 2022 |
| Telenor Forsikring AS | Financial services | 1998 |
| Telenor Growth Holding AS | | 2023 |
| Telenor Gti AS | Information & communication | 2008 |
| Telenor Iot AS | Information & communication | 2025 |
| Telenor Jeløy Radio AS | Hospitality | 2019 |
| Telenor KB AS | Information & communication | 2001 |
| Telenor Linx AS | Information & communication | 1995 |
| Telenor Låveveien 55 AS | Information & communication | 2019 |
| Telenor Marketplace Invest AS | Information & communication | 2015 |
| Telenor Mobile Communications AS | | 1992 |
| Telenor Mobile Holding AS | Information & communication | 2001 |
| Telenor Møre Og Romsdal Og Trøndelag 2 AS | Real estate | 2020 |
| Telenor Networks Holding AS | Information & communication | 2001 |
| Telenor Nord 2 AS | Real estate | 2020 |
| Telenor Norge AS | Information & communication | 1996 |
| Telenor Procurement AS | | 2024 |
| Telenor Procurement Holding AS | Information & communication | 2023 |
| Telenor Real Estate AS | Information & communication | 2014 |
| Telenor Shared Services AS | Administrative & support | 2001 |
| Telenor Sovereign Cloud Norway AS | Information & communication | 2025 |
| Telenor Towers AS | Real estate | 2021 |
| Telenor Towers Norway AS | Information & communication | 1994 |
| Telenor Tracking Solutions AS | Information & communication | 2023 |
| Telenor Tryvann Radio AS | Information & communication | 2019 |
| Telenor Vestlandet Og Rogaland 2 AS | Real estate | 2020 |
| Telenor Viken Og Innlandet 2 AS | Real estate | 2020 |
| Telenor Øvre Strandgate 5 2 AS | Real estate | 2020 |
| Telna AS | Administrative & support | 2016 |
| Tennis Invest AS | Health & social care | 2026 |
| Tensacciai Branch Norway Nuf | Professional & scientific | 2022 |
| Terje Hatteland AS | Wholesale & retail | 1992 |
| Tex Trading Cavaliere AS | Wholesale & retail | 1994 |
| TFN 2 AS | | 2023 |
| TFN 3 AS | Real estate | 2019 |
| Tglhm AS | Professional & scientific | 2021 |
| Thang 000 Holding AS | | 2023 |
| The Big Marble Company AS | Professional & scientific | 2024 |