| Scanflex AS | Birkeland | 1987 |
| Scanglide AS | Mjøndalen | 2017 |
| Scanjet Ariston AS | Porsgrunn | 1998 |
| Scanlabel AS | Dk-8700 Horsens | 2018 |
| Scanmar AS | Åsgårdstrand | 1980 |
| Scanmar Professional AS | Tjøme | 2015 |
| Scanmarinegroup of Norway AS | Rissa | 2001 |
| Scanmark Narvik AS | Narvik | 2022 |
| Scanmark Norge AS | Harstad | 1977 |
| Scanmast AB | 792 22 Mora | 2009 |
| Scanmatic AS | Arendal | 1971 |
| Scanmatic Pneumatic Conveying System AB | Se-26513 Åstorp | 2023 |
| Scanox AS | Lier | 1972 |
| Scanpanel AS | Larsnes | 2023 |
| Scanpiping OY Nuf | Hundvåg | 2024 |
| Scanplast & Co AS | Sandefjord | 2003 |
| Scanplast AS | Holmestrand | 1987 |
| Scanpole AS | Ilseng | 2003 |
| Scanpole OY | Fi-80100 Joensuu | 2017 |
| Scanprod AS | Valderøya | 2001 |
| Scansense AS | Åsgårdstrand | 2003 |
| Scanstore | 5500 Middelfart | 2021 |
| Scantec AS | Oslo | 2017 |
| Scantech AS | Åsgårdstrand | 1989 |
| Scanunit Aktiebolag | Se-252 29 Helsingborg | 2024 |
| Scanvogn | Oslo | 2014 |
| Schegg Grooming AS | Oslo | 2019 |
| Schibsted Trykk Bergen AS | Godvik | 2010 |
| Schibsted Trykk Oslo AS | Vestby | 1995 |
| Schilders - En Straalbedrijf Schalekamp B.V | 3195 Zh Pernis Rotterdam | 2010 |
| Schilling Engineering GmbH | De-79793 Wutöschingen | 2026 |
| Schindler AS | Vennesla | 1977 |
| Schjei Holding AS | Verdal | 2012 |
| Schjelle Snekkerverksted AS | Sel | 2007 |
| Schjoll Reklame AS | Oslo | 2002 |
| Schley & Spansdahl | Oslo | 1999 |
| Schneider Pa GmbH | De-65719 Hofheim Am Taunus | 2023 |
| Schnell Kundendienst GmbH | De-76137 Karlsruhe | 2026 |
| Schottel Nordic AS | Frogner | 1929 |
| Schuck Group GmbH Nuf | De-89555 Steinheim Am Albuch | 2024 |
| Schulz & Berger Luft- Und Verfahrenstechnik GmbH | De-04600 Altenburg | 2020 |
| Schur Automation | Dk-8700 Horsens | 2013 |
| Schutz Nordic AS | Kongsvinger | 1999 |
| Schôller Spesial Machines GmbH & Co. KG | De-74585 Rot Am See | 2025 |
| Scientific Games International GmbH | At-1130 Wien | 2015 |
| Scientific Nutrition AS | Skedsmokorset | 2021 |
| SCM Group S.P.A. Nuf | It-Rimini 8 (Rn) Cap 47921 | 2019 |
| Scotmas Limited | Roxburgshire Td5 8Au Scotland | 2023 |
| Scott Aviation Services Ltd | Ie-Carlow R93 R802 | 2023 |
| Screen Graph AS | Bø I Telemark | 2015 |
| Screenshadow Da | Skiptvet | 2008 |
| Scrocchia 80 AS | Tyristrand | 2024 |
| SCS Norway | Drøbak | 2019 |
| Scuderia AS | Kristiansand S | 2014 |
| SD Tank SP. Z.O.O. | Pl-84-312 Cewice | 2022 |
| SDK D.O.O. Nuf | Hr-42202 Trnovec Bartolovecki | 2025 |
| SDM Holding AS | Os | 2008 |
| SE Maler Firma AS | Flekkerøy | 2024 |
| SE Mekaniske AS | Sem | 2024 |
| Se-Mont AS | Horten | 2007 |
| Sea Growth AS | Værøy | 2025 |
| Sea Horse AS | Steinsland | 2021 |
| Sea Maid AS | Oslo | 2025 |
| Sea Surveillance AS | Laksevåg | 1989 |
| Sea Tex AS | Hauge I Dalane | 2005 |
| Sea-Hawk Navigation AS | Laksevåg | 2000 |
| Sea-Tek AS | Spydeberg | 2021 |
| Seabit AS | Tromsdalen | 2015 |
| Seaboene Group AS | Nesttun | 2026 |
| Seacabin | Dk-6700 Esbjerg | 2019 |
| Seacabin AS | Straume | 2024 |
| Seacronch Norway AS | Malvik | 2026 |
| Seafarm Solutions AS | Vaksdal | 2000 |
| Seafertil AS | Skogsvåg | 2024 |
| Seafood Farmers of Norway AS | Valderøya | 1998 |
| Seafood Solutions AS | Namsos | 2017 |
| Seafun Boat Da | Brønnøysund | 2003 |
| Seagarden AS | Avaldsnes | 1997 |
| Seagarden Group ASA | Avaldsnes | 2002 |
| Seagems Group AS | Ellingsøy | 2022 |
| Seagems Norway AS | Ellingsøy | 2022 |
| Seagourmet Norway AS | Båtsfjord | 2009 |
| Seal AS | Fredrikstad | 2021 |
| Seal Engineering AS | Fredrikstad | 2012 |
| Seal Jet Norge Holding AS | Fredrikstad | 2012 |
| Seala AS | Skartveit | 2018 |
| Sealift Systems AS | Steinsland | 1985 |
| Sealight AS | Skjeberg | 2016 |
| Seam AS | Avaldsnes | 2003 |
| Seam Investco AS | Avaldsnes | 2021 |
| Seam Services AS | Hauge I Dalane | 2021 |
| Seamless AS | Oslo | 2022 |
| Seannovation Production AS | Sandefjord | 2024 |
| Seaoptic AS | Eidsnes | 2019 |
| Seapoint Båtsfjord AS | Os | 2022 |
| Seas Fabrikker AS | Moss | 1956 |
| Seasafe Norway AS | Ålesund | 2014 |
| Seashore Industri AS | Bremnes | 2023 |
| Seaside Industries Nuf | Lt-92100 Klaipeda | 2024 |
| Seaside Innovasjon AS | Stranda | 2006 |