| Skagerrak Navigation AS | Mandal | 2014 |
| Skaka AS | Mauseidvåg | 2025 |
| Skaks | Dk-6230 Rødekro | 2021 |
| Skandinavisk Grænsspedition HB | Se-67392 Charlottenberg | 2000 |
| Skangods AS | Ytre Enebakk | 2001 |
| Skanlog AS | Oslo | 1980 |
| Skanol Kraby AS | Lena | 2001 |
| Skanol Norge AS | Oslo | 2011 |
| Skanol Nuf | Dk-8000 Århus C | 2011 |
| Skansgård Transport AS | Sør-Fron | 2013 |
| Skansi Ship Invest Nuf | Fo-100 Tórshavn | 2021 |
| Skantrans AS | Gamle Fredrikstad | 2014 |
| Skapalen Drift & Utleie AS | Jaren | 2023 |
| Skardsvarden Invest AS | Kolbotn | 2023 |
| Skarnes Taxisentral SA | Skarnes | 2014 |
| Skarsbakk Holding AS | Frosta | 2023 |
| Skarsbakk Transport AS | Frosta | 2023 |
| Skarstein-Førde AS | Stryn | 2023 |
| Skarstølen Da | Etne | 2007 |
| Skarv Holding AS | Nyborg | 2023 |
| Skarv Shipowning AS | Nyborg | 2023 |
| Skarv Shipping AS | Nyborg | 2023 |
| Skattegården Rederi Nuf | Se-533 92 Lundsbrunn | 2024 |
| Skaug Maskin Og Transport AS | Kolbu | 2025 |
| Skaug Transport AS | Skjetten | 2012 |
| Skaun Taxisentral AS | Børsa | 2003 |
| Skedsmo Bud & Vare AS | Jessheim | 1992 |
| Skedsmo Frakt AS | Holter | 2020 |
| Skedsmo Parkering AS | Lillestrøm | 2004 |
| Skeie Drift AS | Kristiansand S | 2013 |
| Skevig AS | Heimdal | 2005 |
| Skevig Lastebiltransport AS | Heimdal | 1976 |
| SKG Transport AS | Vesterøy | 2024 |
| Ski Follo Taxidrift AS | Ski | 2001 |
| Ski Taxi SA | Ski | 1975 |
| Skibotn Biltransport AS | Skibotn | 2025 |
| Skibotn Spedisjon AS | Skibotn | 1998 |
| Skibotn Spedisjon Eiendom AS | Skibotn | 2017 |
| Skibs-Aktieselskapet Iver Bugge | Stavern | 1984 |
| Skibsaksjeselskapet Haasund AS | Lillesand | 2016 |
| Skibsaksjeselskapet Hesvik | Oslo | 1955 |
| Skibsaksjeselskapet Rapid | Kolbjørnsvik | 1939 |
| Skibsaksjeselskapet Storli | Bergen | 1993 |
| Skibsaktieselskapet Abaco | Oslo | 1932 |
| Skibsaktieselskapet Bygdøfærgerne | Oslo | 1917 |
| Skibsaktieselskapet Navigation Co Ltd | Bergen | 1923 |
| Skien Dalen Skipsselskap AS | Skien | 1992 |
| Skien Taxi Buss AS | Skien | 2011 |
| Skien Taxi SA | Skien | 1917 |
| Skifter AS | Hamar | 2024 |
| Skiftetjenester Nytt AS | Hagan | 2026 |
| Skiheis Partner AS | Vikebukt | 2016 |
| Skillebekk Garasjer AS | Oslo | 2010 |
| Skilpadda Transport Service AS | Oslo | 2020 |
| Skilsøferga AS | Arendal | 2002 |
| Skinderud Eftf. AS | Oslo | 2012 |
| Skip Og Service AS | Sponvika | 1985 |
| Skipper Nilsen AS | Bodø | 2026 |
| Skippern Yachts AS | Kolbotn | 2023 |
| Skipperviken Mololag SA | Bjørøyhamn | 2003 |
| Skips AS John | Paradis | 1995 |
| Skipsaksjeselskapet Hardingen AS | Haugesund | 1996 |
| Skipsaksjeselskapet Taurus | Sortland | 1984 |
| Skir Brygge AS | Tromsø | 2024 |
| Skistad Transport AS | Tyristrand | 2006 |
| Skjeberg Betongpumping AS | Søgne | 1992 |
| Skjeberg Transport-Teknikk AS | Skjeberg | 1991 |
| Skjellfjorden Kai AS | Sortland | 2005 |
| Skjerkøya Havneterminal AS | Stathelle | 2018 |
| Skjetten Transport AS | Skjetten | 2025 |
| Skjåk Byggservice AS | Skjåk | 2007 |
| Skjåk Taxi AS | Skjåk | 2014 |
| Skjåk Taxi Jøingsli AS | Nordberg | 2024 |
| Skjåk, Kvamme Og Sørhage Transport AS | Lom | 2004 |
| Skjånes Transport Service AS | Skjånes | 2021 |
| Skjæløy Slipp Båtmegling AS | Manstad | 2004 |
| Skjærgårdscruise AS | Hundvåg | 2026 |
| Skjærgårdshjelpen AS | Tysse | 2017 |
| Skjærgårdsservice Blindleia AS | Høvåg | 2012 |
| Skjønhaug Transport AS | Bjørkelangen | 2025 |
| SKL Holding AS | Oslo | 2005 |
| Skodje Taxi AS | Skodje | 2022 |
| Skofterud Transport Da | Gamle Fredrikstad | 2014 |
| Skogan Da | Sandefjord | 1992 |
| Skogheim Solutions AS | Alta | 2024 |
| Skoglund Transport AS | Øverbygd | 1991 |
| Skoglund- Transport AS | Gjøvik | 2019 |
| Skogstad Kran Og Transport AS | Gran | 2021 |
| Skogstrans AS | Høyanger | 2013 |
| Skogtrans AB | Se-45751 Bullaren | 2026 |
| Skogås Transport AS | Ålen | 2008 |
| Skotselv Bil & Maskin AS | Skotselv | 2006 |
| Skoveng Transport AS | Nordby | 2020 |
| Skrallans AS | Stjørdal | 2021 |
| Skraperud Garasjelag SA | Oslo | 1978 |
| Skreien Havfiske AS | Skrova | 2007 |
| Skrenes Transport AS | Balestrand | 2022 |
| Skrenten Garasjelag SA | Oslo | 1958 |
| Skrotnissane Stein AS | Svarstad | 2022 |
| Skrove Transport AS | Verdal | 1998 |