| Engen Fjellsprengning AS | Åmot | 2022 |
| Engen Nord AS | Tromsø | 2022 |
| Engen Service Bygg Og Vedlikehold | Filtvet | 2013 |
| Engenes Holding AS | Vøyenenga | 2021 |
| Enger Entreprenør AS | Skotselv | 2014 |
| Engerdahl - Bygg & Snekkertjenester AS | Årnes | 2024 |
| Engerdal Anlegg & Transport AS | Drevsjø | 2013 |
| Engerdal Elektro AS | Engerdal | 1997 |
| Engerdal Østfjell AS | Engerdal | 2000 |
| Engers Malerfirma AS | Vestskogen | 2022 |
| Engertakst AS | Laksevåg | 2005 |
| Engeset Graveservice AS | Ørsta | 2014 |
| Engesland Bygg AS | Engesland | 2002 |
| Engesæter Holding AS | Nyborg | 2022 |
| Engetek AS | Vøyenenga | 2012 |
| Engevik & Tislevoll AS | Fitjar | 2020 |
| Engevik & Tislevoll Holding AS | Fitjar | 2020 |
| Engevik Bygg AS | Arnatveit | 2026 |
| Engevik Mur & Flis AS | Stord | 2026 |
| Engevik Service AS | Florvåg | 2025 |
| Engevik VVS AS | Sævareid | 2024 |
| Enggrav AS | Lunde | 1995 |
| Engh Vann Og Varme AS | Porsgrunn | 2023 |
| Enghol Bygg & Forvaltning AS | Skjetten | 2021 |
| Engineered Arresting Systems Corporation Nuf | Oslo | 2012 |
| Enginyeria I Aplicacions De Control SL | Es-08500-Vic (Barcelona) | 2016 |
| Enginyeria I Automatismes Vic, S.L | 08503 Gurb (Barcelona) | 2020 |
| Engitherm | Pt- 2685 010 Sacavém | 2019 |
| England Bygg Og Utleige AS | Holmedal | 2017 |
| England Maskin AS | Tranby | 2013 |
| Englers Flis & Skifer AS | Hvittingfoss | 2014 |
| Englund Bygg AS | Gjerdrum | 2021 |
| Englund Holding AS | Gjerdrum | 2021 |
| Engnesskogen AS | Sundbyfoss | 2018 |
| Engo S.R.O. | Sk-91701 Trnava | 2024 |
| Engravslia Og Syftestad Maskin AS | Notodden | 2018 |
| Engstad Byggservice AS | Skibotn | 2025 |
| Engstad Rør AS | Rørvik | 1985 |
| Engstrøm Bygg AS | Levanger | 2022 |
| Engtrø Holding AS | Fetsund | 2009 |
| Engtun Bygg & Eiendom AS | Sandefjord | 2004 |
| Engveien 20 AS | Hakadal | 2014 |
| Engvik Gulvstøp AS | Gol | 2023 |
| Engvik Maskinstasjon AS | Tustna | 1982 |
| Engvoll Holding AS | Grimsbu | 2020 |
| Enigma Kreativne Resitve D.O.O | Si-8000 Nova Mesto | 2019 |
| Enignor AS | Rasta | 2021 |
| Enitech Entreprenør AS | Ålesund | 2008 |
| Enkel Bygg AS | Hjelmeland | 1997 |
| Enkel Design AS | Oslo | 2017 |
| Enkel Holding AS | Hjelmeland | 1998 |
| Enkelt Gjort AS | Grimstad | 2025 |
| Enkeltmanns-Tjeneste AS | Tromsdalen | 2022 |
| Enki AS | Elverum | 2023 |
| Enklere Bolig Entreprenør AS | Asker | 2023 |
| Enkon AS | Nygårdsjøen | 2014 |
| Enkon Varmepumper Og Ventilasjon AS | Fyllingsdalen | 2021 |
| Enkon Varmepumper Og Ventilasjon Storkunde AS | Fyllingsdalen | 2016 |
| Enlids Tradisjonslaft AS | Budalen | 2014 |
| Enmy Holding AS | Byrkjelo | 2022 |
| Enok Dahl Hansen AS | Sellebakk | 2005 |
| Enok-Spesialisten AS | Våler I Østfold | 2023 |
| Enoka AS | Oslo | 2024 |
| Enoksen Blix Holding AS | Fauske | 2025 |
| Enoksen Bygg AS | Risør | 2021 |
| Enord AS | Stokmarknes | 2020 |
| Enplant Engineering AB | Kongsvinger | 2010 |
| Enpro Schweiz AG | Ch-5610 Wohlen | 2026 |
| Enreduce Energy Control AB | Se-753 26 Uppsala | 2001 |
| Ensa Probygg AS | Hønefoss | 2022 |
| Enso Holding AS | Stryn | 2015 |
| Ensol AS | Hvam | 2022 |
| Enstad Byggservice AS | Åndalsnes | 2024 |
| Ensy AS | Gran | 2012 |
| Entas AS | Oslo | 2005 |
| Entek AS | Sandefjord | 1985 |
| Entrep Altermark AS | Mo I Rana | 2025 |
| Entrep AS | Grålum | 2020 |
| Entrep. Maskinutleie AS | Ytre Enebakk | 2024 |
| Entrepnor AS | Bjerka | 2014 |
| Entreprenad Olof Koivuniemi Handelsbolag | Narvik | 1996 |
| Entreprenadreparationer I Örebro AB | Se-702 27 Örebro | 2013 |
| Entrepreneur AS | Snåsa | 2005 |
| Entreprenord AS | Arendal | 2015 |
| Entreprenør 1 AS | Trøgstad | 2010 |
| Entreprenør Ansgar Birkeland AS | Hosteland | 1986 |
| Entreprenør Arne Haukeland AS | Kalandseidet | 1986 |
| Entreprenør AS | Rælingen | 2026 |
| Entreprenør Axl AS | Kolbotn | 2021 |
| Entreprenør Bjaaland AS | Porsgrunn | 2015 |
| Entreprenør Bjørn Dale AS | Manger | 2005 |
| Entreprenør Bygg AS | Kjeller | 2005 |
| Entreprenør Dale AS | Nedre Vats | 2017 |
| Entreprenør Egil Gripsgård AS | Frekhaug | 2023 |
| Entreprenør Eivind Øvergård AS | Fevåg | 2011 |
| Entreprenør Ekerhaugen AS | Kapp | 2021 |
| Entreprenør Geir Stangeland AS | Sandnes | 1998 |
| Entreprenør Greg Bygg AS | Ski | 2014 |
| Entreprenør Gruppen AS | Lørenskog | 2024 |
| Entreprenør Harald Nilsen AS | Alta | 1990 |