| Spenning Holding AS | Tynset | 2022 |
| Spenningen AS | Åros | 2022 |
| Speno International SA | Ch-1217 Meyrin 1 | 2001 |
| Sperlin AS | Skjærhalden | 2017 |
| Spernes Bygg AS | Gamle Fredrikstad | 2018 |
| Sperofix OY Nuf | Fi-00130 Helsinki | 2026 |
| Sperre Gulvsliping AS | Grimstad | 2015 |
| Sperre Maskin AS | Ellingsøy | 2025 |
| Sperreport AS | Randaberg | 2021 |
| Sperrevik Anleggservice AS | Nesttun | 2020 |
| Sperrevik Bygg AS | Lysekloster | 2023 |
| Sperrevik Elektro AS | Os | 2012 |
| Sperrevik Utvikling AS | Fyllingsdalen | 2022 |
| Sperry Rail (UK) Ltd | Derby De1 3Jx England | 2002 |
| Spesialdekker AS | Slattum | 2008 |
| Spesialgass Vest AS | Fyllingsdalen | 2017 |
| Spesialinteriør & Design Spid AS | Oslo | 1998 |
| Spesialmontasje AS | Skogn | 2016 |
| Spesialtransport AS | Halden | 2018 |
| Spezial-Abdichtung M. Richter GmbH | De-04425 Taucha | 2019 |
| SPH Invest AS | Ålgård | 2021 |
| Spi Global Play S.R.O. | Sk-08221 Velky Saris | 2023 |
| Spicetec Sweden AB Nuf | Se-83294 Orrviken | 2018 |
| Spie Industry | Be-1070 Anderlecht | 2025 |
| Spie Nederland B.V. | 4815 Pn Breda | 2013 |
| Spie WHS Limited | London Ec3V 0Bt England | 2010 |
| Spieler Holding AS | Oslo | 2021 |
| Spiker Og Sparkel AS | Oslo | 2025 |
| Spikern AS | Orkanger | 2022 |
| Spikern Bygg AS | Oslo | 2003 |
| Spikerslaget AS | Bodø | 2021 |
| Spikerslaget Holding AS | Bodø | 2019 |
| Spikra AS | Ålesund | 2023 |
| Spilde Entreprenør AS | Voss | 1992 |
| Spilde Service Og Eiendom AS | Næroset | 2025 |
| Spileveggen AS | Kristiansand S | 2024 |
| Spinke AS | Ski | 2018 |
| Spira Bygg Ltd Nuf | Gryllefjord | 2012 |
| Spirit Road | Se-512 62 Mårdaklev | 2025 |
| Spitsbergen Bygg AS | Longyearbyen | 2018 |
| Spitzke SE | D-14979 Grossbeeren | 2011 |
| Spjudvik Invest AS | Askim | 2014 |
| Spjudvik Rør AS | Askim | 2016 |
| SPL Powerlines Norway AS | Krokstadelva | 2009 |
| Splicegroup Europe Limited | Bradford West Yorkshire Bd11 1Ln | 2025 |
| Splitgrid AB Nuf | 703 42 Örebro | 2024 |
| Splitkon Entreprenør AS | Hokksund | 2024 |
| Spon AS | Porsgrunn | 2016 |
| Spongdal VVS AS | Spongdal | 2012 |
| Sporpind Utbygningsselskap AS | Gressvik | 1980 |
| Sportek AS | Skogsvåg | 2025 |
| Sportlov Bidco AS | Oslo | 2016 |
| Sportlov Topco AS | Oslo | 2016 |
| Sportsconcept Entreprenør AS | Oslo | 2010 |
| Spot AS | Skien | 2018 |
| Spoton AS | Oslo | 2023 |
| Sprengaren AS | Skjold | 2016 |
| Sprengeservice AS | Skiptvet | 2012 |
| Sprengfjell AS | Hønefoss | 2021 |
| Sprengkraft AS | Sandnes | 2023 |
| Sprengningsservice AS | Indre Nærøy | 2014 |
| Sprengningsteknikk AS | Nesttun | 1986 |
| Sprengningsteknikk Nord AS | Storforsheia | 2025 |
| Spretke Craft Service AS | Mogreina | 2021 |
| Spring Bygg AS | Sandnes | 2012 |
| Spring VVS AS | Oslo | 2011 |
| Springbok Rafal Nikonorow Nuf | Pl-95-030 Gospodarz | 2023 |
| Sprinkler Kongen AS | Hokksund | 2021 |
| Sprinkler Kongen Gruppen AS | Hokksund | 2026 |
| Sprinkler Norge AS | Kristiansand S | 2013 |
| Sprinklerbolaget Stockholm AB Nuf | Se-712 33 Västerås | 2014 |
| Sprinklerkontroll & Montasje AS | Loddefjord | 2024 |
| Sprinklerspesialisten AS | Drøbak | 2001 |
| Sprinklerteknikk AS | Oslo | 1973 |
| Sprinktec AS | Bryne | 2020 |
| Sprintek AS | Oslo | 2022 |
| Sprøytelakkering AS | Holmestrand | 2021 |
| Sprøyteproffen AS | Vallset | 2026 |
| SPV Østregate AS | Rud | 2026 |
| SPX Flow Technology Danmark | Dk-8600 Silkeborg | 1995 |
| Spyd Tvilling Holding AS | Røyken | 2022 |
| Spydeberg Byggentreprenør AS | Spydeberg | 2012 |
| Spydeberg Elektro AS | Spydeberg | 2008 |
| Spyle & Rørkontroll AS | Froland | 2016 |
| Spyle & Rørleggervakta AS | Tyristrand | 2026 |
| Spylebilen AS | Torp | 2024 |
| Spylebilen Oslo AS | Oslo | 2026 |
| Spyleservice Sør AS | Grimstad | 2026 |
| Spyleteknikk AS | Stokmarknes | 2022 |
| SPZ Ingeniør & Byggtjenester AS | Erdal | 2022 |
| Spännteknik S.L.F AB | Se-67193 Arvika | 2020 |
| Spåtindtoppen Holding AS | Aust-Torpa | 2022 |
| SR Betongboring/Saging AS | Trondheim | 2011 |
| SR Betongservice AS | Stokke | 1996 |
| SR Bygg AS | Nodeland | 2011 |
| SR Bygg Og Anlegg AS | Råde | 2015 |
| SR Dale AS | Elnesvågen | 2026 |
| SR Entreprenør Holding AS | Sandnes | 2021 |
| SR Rehab AS | Bergen | 2023 |
| SR Robotteknikk AS | Rådal | 2023 |