| Stavrum Bygg AS | Ekne | 2023 |
| Stavrum Holding AS | Ekne | 2023 |
| Stavrum Klepp AS | Inderøy | 2012 |
| Stavset AS | Skodje | 2017 |
| Stavset Bolig AS | Skodje | 2013 |
| Stavset Bygg AS | Skodje | 2006 |
| STB Solar AS | Skien | 2023 |
| STC Work Nuf | Pl - 50 559 Wroclaw | 2023 |
| STD Bygg AS | Drammen | 2024 |
| Steam Bygg AS | Kvaløya | 2024 |
| Steam Clean Buskerud AS | Mjøndalen | 1998 |
| Stebekk Elektroservice AS | Vegårshei | 2016 |
| Stebekk Vedlikehold AS | Vegårshei | 2007 |
| Steconfer AS | Drammen | 2024 |
| Steconfer S.A. - Norway Branch Nuf | Drammen | 2020 |
| Steel & Plast AS | Svelvik | 2016 |
| Steel Constructor MM | Lv-3018 Ozolnieku Nov | 2016 |
| Steel Marconstruct SRL | Ro-900082 Constanta | 2026 |
| Steelart SP Zoo | Pl-40-321 Katowice | 2025 |
| Steelpool Sweden AB | Se-635 02 Eskilstuna | 2010 |
| Steen & Olsen AS | Sarpsborg | 1996 |
| Steen Eiendom Entreprenør AS | Elverum | 2004 |
| Steen Gruppen AS | Lillestrøm | 2025 |
| Steen-Hansen & Skuggedal AS | Skien | 2025 |
| Steen-Hansen Maskin AS | Skien | 2007 |
| Steenmaskinering AS | Rubbestadneset | 2024 |
| Steensenbygg Da | Nedenes | 2016 |
| Stefan's Entreprenør Og Renhold AS | Oslo | 2015 |
| Steffen Fidjeland AS | Birkeland | 2008 |
| Steffen Flaa Bygg AS | Birkeland | 2019 |
| Steffen Stadheim AS | Sogndal | 2017 |
| Steffensen Maskin & Transport AS | Ulvsvåg | 1992 |
| Stefferud Holding AS | Vikersund | 2019 |
| Steg Entreprenør AS | Geithus | 2012 |
| Stegi Invest AS | Oslo | 2025 |
| Stegra Entreprenør AS | Askim | 2001 |
| Steigen Contracting AS | Engeløya | 2007 |
| Steigen Graveservice AS | Engeløya | 2010 |
| Stein & Brygge AS | Stol | 2014 |
| Stein & Flis Da | Kløfta | 2006 |
| Stein Arild Risan AS | Verdal | 2015 |
| Stein Arne Sunde AS | Skei I Jølster | 2003 |
| Stein Bygg Service AS | Jessheim | 2020 |
| Stein Eiendom AS | Bodø | 1990 |
| Stein Erik Slettmoen AS | Ringebu | 2017 |
| Stein Gulset AS | Blommenholm | 1995 |
| Stein HT GmbH Spezialtiefbau | De-44653 Herne | 2021 |
| Stein Kåre Røvik AS | Kjøllefjord | 2009 |
| Stein Løvstuen AS | Uvdal | 2020 |
| Stein Maskin & Transport AS | Jørpeland | 2011 |
| Stein Maskin AS | Steinsdalen | 2007 |
| Stein Moen Maskin AS | Lundamo | 2011 |
| Stein Mur Betong AS | Rånåsfoss | 2022 |
| Stein Og Fasade AS | Horten | 2020 |
| Stein Og Jord Deponi AS | Spydeberg | 2006 |
| Stein Ove Gjestad AS | Snåsa | 2017 |
| Stein Systemer AS | Stavanger | 2006 |
| Stein Torald Vonen AS | Naustdal | 2006 |
| Steinar Andersen Elektriske AS | Bodø | 2012 |
| Steinar Bratlien AS | Snertingdal | 2015 |
| Steinar Foss AS | Kaupanger | 1993 |
| Steinar Frorud Graveservice AS | Hobøl | 2007 |
| Steinar Gjersrud & Co AS | Sofiemyr | 1994 |
| Steinar Johnsen Invest AS | Indre Arna | 2011 |
| Steinar Klavestad Holding AS | Sarpsborg | 2005 |
| Steinar Kristoffersen AS | Bjerkvik | 2012 |
| Steinar Kvisler AS | Spydeberg | 2003 |
| Steinar L Hansen AS | Holmestrand | 2024 |
| Steinar Levernes AS | Rakkestad | 1993 |
| Steinar Løvbak AS | Brumunddal | 1999 |
| Steinar Morken Montering AS | Trondheim | 2001 |
| Steinar Myhre AS | Skogn | 2017 |
| Steinar Onstad AS | Oslo | 1988 |
| Steinar Sandvik Bygg AS | Ålesund | 2018 |
| Steinar Skaansar Og Sønn AS | Lom | 1980 |
| Steinar Solhaug AS | Løten | 2002 |
| Steinar Sollie Bygg AS | Høvåg | 2006 |
| Steinar Sollie Invest AS | Høvåg | 2005 |
| Steinars Snekkerservice AS | Ramnes | 2010 |
| Steinbakken Entreprenør AS | Oslo | 2018 |
| Steinberg Stillasutleie AS | Oslo | 2021 |
| Steinbruddet Invest AS | Sortland | 2018 |
| Steinecker GmbH | 85356 Freising | 2021 |
| Steinegard AS | Norheimsund | 2023 |
| Steineide Maskin AS | Heidal | 2015 |
| Steinekspert Og Utemiljø AS | Grimstad | 2023 |
| Steiner Solutions AS | Drammen | 2024 |
| Steiner VVS AS | Horten | 2023 |
| Steinhard Betong AS | Tverlandet | 2023 |
| Steinhaug & Kleven AS | Notodden | 2006 |
| Steinkjer Bad & Våtrom AS | Steinkjer | 2018 |
| Steinkjer Blikk AS | Steinkjer | 2022 |
| Steinkjer by- Og Bygdeservice SA | Steinkjer | 2000 |
| Steinkjer Bygg Og Montasje AS | Steinkjer | 2016 |
| Steinkjer Kulturbygg AS | Steinkjer | 2017 |
| Steinkjer Tak AS | Steinkjer | 2018 |
| Steinkunst Norge AS | Krokelvdalen | 2026 |
| Steinleggern AS | Rælingen | 1998 |
| Steinli AS | Vågå | 2026 |
| Steinmann Bygg AS | Skreia | 2018 |