| Elamit Zbigniew Sztobryn | Høvik | 2011 |
| Elan Bygg AS | Ålesund | 2023 |
| Elan Inventa D.O.O | Oslo | 2014 |
| Elanto Oppmerking AS | Jessheim | 2013 |
| Elbra AS | Ålesund | 2017 |
| Elbra Installasjon AS | Ålesund | 2023 |
| Elbygas Uab Nuf | Lt-91268 Klaipeda | 2019 |
| Elbygg AS | Volda | 2026 |
| Elbygg Midtnorge AS | Leksvik | 2020 |
| Elbygg Takst AS | Drammen | 1987 |
| Elceta AS | Sande I Vestfold | 1998 |
| Elceta Invest AS | Sande I Vestfold | 2005 |
| Elcom AS | Rørvik | 2006 |
| Elcom Bergen AS | Bergen | 2024 |
| Elcon AS | Eidsnes | 2021 |
| Elconnect AS | Krokstadelva | 2024 |
| Elcontact AS | Ulsteinvik | 2010 |
| Elcraft AS | Moelv | 2026 |
| Eldar Krøvel AS | Ørsta | 2012 |
| Eldevik AS | Barkåker | 2018 |
| Eldevik Bygg AS | Barkåker | 2014 |
| Eldevik Holding AS | Barkåker | 2012 |
| Eldfast Svenska AB | Se-451 55 Uddevalla | 2022 |
| Eldorado Entreprenør AS | Sandefjord | 2021 |
| Eldre Bygg AS | Hesseng | 2023 |
| Eldrun AS | Ågotnes | 2026 |
| Eldstad Entreprenør AS | Gol | 2005 |
| Eldøyane Lagerservice AS | Stord | 2024 |
| Eleco Installasjon AS | Risør | 2016 |
| Electra AS | Åros | 2025 |
| Electric | Dk-6000 Kolding | 2023 |
| Electricidad Barrueta SL | Es-01400 Laudio | 2025 |
| Electricity Transmission and Distribution Solutions Ltd Nuf | Greenhithe Da9 9Wr | 2025 |
| Electriq AS | Oslo | 2021 |
| Electrix AS | Grålum | 2020 |
| Electrix Industry AS | Grålum | 2020 |
| Electro Alfaz Slu | Es-03580 Alfaz Del Pi | 2013 |
| Electro Automation Limited Nuf | D15 Xwr3 Mulhuddart Dublin 15 | 2026 |
| Electro Ship Service AS | Trollåsen | 2016 |
| Electro Ship Service Iwona Potapczuk | Pl-80 807 Gdansk | 2014 |
| Electro Team AS | Kristiansund N | 2015 |
| Electro-Vakta AS | Oslo | 1987 |
| Electromarine Spolka Z Ograniczona Odpowiedzialnoscia Nuf | 83-000 Pruszcz Gdanski | 2024 |
| Electromontaj S.A. Nuf | Ro-040581 Buceresti | 2025 |
| Electrotec I Östergötland AB | 612 91 Finspång | 2006 |
| Eleda Norge AS | Alvdal | 2022 |
| Elegant Elektro AS | Sande I Vestfold | 2026 |
| Elegante Gulv AS | Oslo | 2021 |
| Elektor Installasjon AS | Stange | 2005 |
| Elektriker 1 Alta AS | Alta | 2016 |
| Elektriker 1 Brønnøysund AS | Brønnøysund | 2017 |
| Elektriker 1 Sandnes AS | Sandnes | 2010 |
| Elektriker 1 Trondheim AS | Trondheim | 2002 |
| Elektriker Andersen AS | Alta | 2016 |
| Elektriker AS | Trondheim | 2006 |
| Elektriker Bekkevold AS | Årnes | 2003 |
| Elektriker Gruppen AS | Oslo | 1998 |
| Elektriker I Oslo AS | Oslo | 2026 |
| Elektriker Leif AS | Borgen | 2025 |
| Elektriker Løsningen Aps | Dk-6818 Årre | 2019 |
| Elektriker Systemer AS | Flå | 2021 |
| Elektriker Trondheim AS | Trondheim | 2023 |
| Elektriker Øst AS | Solbergelva | 2005 |
| Elektriker'N Asker AS | Hvalstad | 2016 |
| Elektriker'N Majorstua AS | Oslo | 1996 |
| Elektriker'N Ringsaker AS | Moelv | 2004 |
| Elektriker'N Sauherad AS | Notodden | 2008 |
| ELEKTRIKER1 Romerike AS | Lørenskog | 2012 |
| Elektrikeren AS | Hammerfest | 1987 |
| Elektrikeren Drammen AS | Drammen | 2014 |
| Elektrikeren Kongsberg AS | Kongsberg | 1991 |
| Elektrikergutta AS | Vestby | 2025 |
| Elektrikern AS | Fjellhamar | 2020 |
| Elektrikern Bodø AS | Bodø | 2009 |
| Elektrikern Fron AS | Vinstra | 1994 |
| Elektrikern Kjell Sæterøy AS | Kjeller | 2017 |
| Elektrikern Mo AS | Mo I Rana | 2015 |
| Elektrikern Mosjøen AS | Mosjøen | 2003 |
| Elektrikern Oslo AS | Oslo | 2015 |
| Elektrikersentralen Ans | Oslo | 2006 |
| Elektrikerservice AS | Trondheim | 1995 |
| Elektrikerservice Hallingdal AS | Gol | 2008 |
| Elektrikerservice Verdal AS | Verdal | 2011 |
| Elektrikertjenesten AS | Oslo | 1997 |
| Elektrikertjenesten Halden AS | Halden | 2003 |
| Elektrikertjenesten Sarpsborg-Fredrikstad AS | Fredrikstad | 2006 |
| Elektrisk AS | Oslo | 1994 |
| Elektrisk Installasjon AS | Vang I Valdres | 2000 |
| Elektrisk Kompagni AS | Vestby | 2012 |
| Elektriske Stabell AS | Oslo | 2011 |
| Elektriske Systemer AS | Flå | 2025 |
| Elektro & Automasjonssystemer AS | Olsvik | 2026 |
| Elektro & Bygg AS | Haugesund | 2007 |
| Elektro & Gass Service AS | Skarnes | 2019 |
| Elektro & IT AS | Dal | 2026 |
| Elektro & Rør Teknikk AS | Oslo | 2025 |
| Elektro - Partner AS | Nesbru | 2013 |
| Elektro - Team AS | Oslo | 1981 |
| Elektro 1 AS | Reinsvoll | 2005 |
| Elektro 1 Tønsberg AS | Sem | 2002 |