| SRX Logistikk AS | Skien | 2026 |
| SS Transport AS | Stange | 2024 |
| SSF Transport AS | Rudshøgda | 2008 |
| Ssi Shipowning I Inc. Nuf | Ky1-1104 Grand Cayman | 2021 |
| SSL Transport AS | Kleppe | 2023 |
| SST Drift & Terminal AS | Espa | 1992 |
| SST Marine AS | Sarpsborg | 2017 |
| SST Norge AS | Nordkjosbotn | 2025 |
| Ssy Norway Asia AS | Bergen | 2017 |
| Ssy Valuation Services AS | Bergen | 2021 |
| ST Transport AS | Oslo | 2023 |
| St-Transport & Montering AS | Holter | 2020 |
| ST. Hanshaugen Flyttebyrå AS | Oslo | 2024 |
| Stabbestein AS | Høvik | 2022 |
| Stadion Parkering AS | Oslo | 2006 |
| Stadler Minsk Cjsc Nuf | By-222750 Minsk | 2025 |
| Stadt Chartering AS | Eikefjord | 2007 |
| Stadt Kranservice AS | Stadlandet | 2020 |
| Stahøv SA | Fornebu | 1979 |
| Stainless Tankers ASA | Oslo | 2022 |
| Staknes Turvogn AS | Vikedal | 2018 |
| Stamers Rederi AS | Drammen | 1959 |
| Stamnes Transport AS | Flatanger | 1982 |
| Stamnesøy Shipping AS | Hemnskjela | 2020 |
| Stamper Holding AS | Sandefjord | 2023 |
| Stamsund Skipsekspedisjon AS | Stamsund | 1999 |
| Standarn Distribusjon AS | Løfallstrand | 2012 |
| Standerholen Varetransport AS | Tistedal | 2024 |
| Stange Frakt AS | Randaberg | 2020 |
| Stange Taxisentral Ans | Stange | 1995 |
| Star Limo AS | Oslo | 2022 |
| Star Reefers Pool Inc. Nuf | Ky1-1104 Grand Cayman | 2021 |
| Star Shipping & Invest AS | Rong | 2014 |
| Star Transport AS | Eidsvoll | 2000 |
| Starheimsvik AS | Stårheim | 2010 |
| Stas Transport AS | Lyngdal | 2018 |
| Stasjonsdrift Iaktra AS | Strømmen | 2023 |
| Stasjonsgarasjen Voss AS | Oslo | 2020 |
| Statsminister Torpsvei 49 AS | Borgenhaugen | 2006 |
| Stav Maskin Og Transport AS | Vikhammer | 2008 |
| Stav Trans AS | Foldrøyhamn | 2002 |
| Stavanger Bilsalg AS | Stavanger | 2013 |
| Stavanger Bud & Vare AS | Klepp Stasjon | 2022 |
| Stavanger Flyttebyrå AS | Stavanger | 2015 |
| Stavanger Fortøyning AS | Stavanger | 2025 |
| Stavanger Kran AS | Sandnes | 2011 |
| Stavanger Miljøtaxi AS | Stavanger | 2008 |
| Stavanger Offshore AS | Stavanger | 2006 |
| Stavanger Shipbrokers AS | Hafrsfjord | 2015 |
| Stavanger Short Sea Terminals AS | Tananger | 2020 |
| Stavanger Taxi AS | Stavanger | 1915 |
| Stavanger Transport NTK AS | Randaberg | 2010 |
| Stavanger Turbuss AS | Sandnes | 2023 |
| Stavangerregionen Havn Eiendom AS | Tananger | 2004 |
| Stavangerregionen Havnedrift AS | Tananger | 1994 |
| Stavangerske AS | Stavanger | 1998 |
| Stave Transport AS | Kristiansand S | 2017 |
| Staven Transport AS | Åfjord | 2022 |
| Stavenes Transport AS | Myking | 2024 |
| Stavern Dykkersenter AS | Stavern | 2010 |
| Stavnes Båtservice AS | Søndeled | 2026 |
| Stavnes Transport AS | Trondheim | 2018 |
| STEEM1960 Shipbrokers AS | Oslo | 1990 |
| Steen Betongpumping AS | Levanger | 1997 |
| Steen M Hansen Nuf | Dk 9310 Vodskov | 2018 |
| Steen Sydow AS | Oslo | 2017 |
| Steen Transport AS | Kurland | 2006 |
| Steen Universal AS | Oslo | 2013 |
| Steensland Containerships AS | Oslo | 1999 |
| Stefan Hartsieker Transport Nuf | Narvik | 2009 |
| Stefan Knutsson Transport AB | Halden | 2008 |
| Stefanis Transport AS | Oslo | 2022 |
| Steffen Nilsen Og Sønn AS | Korsvegen | 2022 |
| Steig Og Svendsen Da | Hell | 2000 |
| Steig Transport AS | Engeløya | 2010 |
| Steigen Bilberging AS | Bogøy | 1995 |
| Steimler AS | Oslo | 2021 |
| Stein Grøtting AS | Fjellhamar | 2020 |
| Stein Hesthagen Transport AS | Moelv | 2015 |
| Stein Ivar Ludvigsen Transport AS | Kristiansand S | 1998 |
| Stein Sørensen Persontransport Din Taxi AS | Tromsø | 1998 |
| Steinar Frellumstad Kran Og Transport AS | Skoppum | 1999 |
| Steinar Hagen Transport & Maskin AS | Sylling | 2012 |
| Steinar Hanssen Transport AS | Mo I Rana | 1997 |
| Steinar Johansen Transport AS | Ingeberg | 2003 |
| Steinar Kjær Transport AS | Kristiansand S | 1997 |
| Steinar Kolnes AS | Randaberg | 2014 |
| Steinar Larsen Transport AS | Langhus | 2004 |
| Steinar Nesset AS | Ørje | 2005 |
| Steinar Nilsen Transport AS | Sande I Vestfold | 1995 |
| Steinar Olaisen AS | Herøy | 2016 |
| Steinbergstallen Garasjelag SA | Oslo | 1957 |
| Steinbråten Transport AS | Andebu | 2006 |
| Steine Transport AS | Suldalsosen | 2020 |
| Steinholt Handel AS | Ørskog | 1994 |
| Steinkjer Taxi AS | Steinkjer | 2019 |
| Steinkjer Taxilag SA | Steinkjer | 2023 |
| Steinshaug Transport AS | Fannrem | 2015 |
| Steinsundholmen AS | Vestre Vinnesvåg | 2022 |
| Stell AS | Oslo | 2025 |