| Herlof Flosand Invest AS | Rørvik | 2022 |
| Herman Vegheim AS | Skien | 2023 |
| Hermann a. Pedersen AS | Bjarkøy | 2019 |
| Hermann VVS AS | Verdal | 2011 |
| Hermanrud Graveservice AS | Hønefoss | 2021 |
| Hermansen Bygg & Tjenester AS | Holmestrand | 2026 |
| Hermansen Elektro AS | Stokke | 2020 |
| Hermansen Entreprenør AS | Gressvik | 2022 |
| Hermansen Maskin AS | Sande I Vestfold | 2006 |
| Hermansen VVS & Vedlikehold AS | Stathelle | 2025 |
| Hermes VVS AS | Hakadal | 2022 |
| Hermstad AS | Malvik | 2020 |
| Hermstad Holding AS | Trondheim | 2024 |
| Hernes AS | Stjørdal | 2005 |
| Hernes Entreprenør AS | Auli | 2024 |
| Herolf Hansen & Sønn AS | Tromsdalen | 2019 |
| Herolf Hansen & Sønn AS | Kvaløysletta | 1998 |
| Herolf Hansen & Sønn Holding AS | Tromsdalen | 2019 |
| Herr Andersen AS | Oslo | 2016 |
| Herr Og Fru Handy AS | Sandnessjøen | 2022 |
| Herrebrøden AS | Halden | 2008 |
| Herredshuset Utbygging AS | Husøy I Senja | 2020 |
| Herregård AS | Ulefoss | 2002 |
| Herregårdsmur AS | Fredrikstad | 2009 |
| Herregårdstugor Synnøve Naber Kåseth | 680 50 Ekshärad | 2004 |
| Herrenknecht (Australia) Pty Limited | Asker | 2016 |
| Herrenknecht (Schweiz) AG | Ch-6474 Amsteg | 2016 |
| Herrenknecht AG | 77963 Schwanau | 2015 |
| Herrenknecht France Sarl | Fr-78400 Chatou | 2016 |
| Herrenknecht Iberica SA | Es-28046 Madrid | 2016 |
| Herrenknecht International Ltd | Sunderland Sr5 2Tz | 2017 |
| Herrenknecht Italia S.R.L. | Gessate 20060 | 2016 |
| Hersjøvegen Selbu SA | Selbu | 2018 |
| Hersleth AS | Hølen | 2024 |
| Hersleth Entreprenør AS | Hølen | 1992 |
| Hersleth Invest AS | Drøbak | 2017 |
| Herstad AS | Slitu | 2000 |
| Herstad Entreprenør AS | Slitu | 2016 |
| Herstad Multiservice AS | Vassenden | 2023 |
| Herts AS | Sunde I Sunnhordland | 2018 |
| Hertwich Engineering GmbH | At-5280 Braunau Am Inn | 2001 |
| Hertzberg Varmeteknikk AS | Oslo | 2014 |
| Hervik Investering AS | Hervik | 2019 |
| Hervik Rør AS | Hervik | 2004 |
| Hervikbygg AS | Steinkjer | 2001 |
| Herwell Blikk Og Håndtverk AS | Horten | 2025 |
| Herøy Snikkarlag AS | Nerlandsøy | 2000 |
| Herøya Elektro AS | Porsgrunn | 1990 |
| Hesch-Works Herman Schmid | 87527 Sonthofen | 2018 |
| Hesjevik Elektro AS | Sandnessjøen | 2026 |
| Hesler & Søn AS | Kjeller | 1985 |
| Hesnesvegen Veglag Vidar Holm SA | Tvedestrand | 1997 |
| Hesselbergtak AS | Skedsmokorset | 1968 |
| Hesselbergtak BVT AS | Larvik | 2021 |
| Hessen Bygg & Utvikling AS | Horten | 2021 |
| Hesseng Maskin AS | Bjørnevatn | 2020 |
| HEST1 Holding AS | Brandbu | 2015 |
| Hestdal Holding AS | Tønsberg | 2005 |
| Hestec AS | Tiller | 2023 |
| Hestenes AS | Nordfjordeid | 2013 |
| Hesteskoen Hytteselskap AS | Aurland | 1998 |
| Hestra Inredninger AB Filial I Norge | Drøbak | 2008 |
| Hesvik Hyttegrend AS | Jondal | 2006 |
| Hetland & Kristiansen AS | Hommersåk | 2026 |
| Hetland Agder AS | Arendal | 1993 |
| Hetland Bygg AS | Rådal | 2014 |
| Hetland Bygg Og Betong AS | Skjoldastraumen | 2025 |
| Hetland Elektro AS | Røyse | 1998 |
| Hetland Rør AS | Sveio | 2023 |
| Hetland Rørleggerbedrift AS | Fjerdingby | 2010 |
| Hetland VVS AS | Sandnes | 2017 |
| Hettervik Bygg AS | Førresfjorden | 2024 |
| Heuft Systemtechnik GmbH | De-56659 Burgbrohl | 2021 |
| Hev Entreprenør AS | Oslo | 2023 |
| Heviku AS | Sørum | 2016 |
| Hevvi Maskin AS | Oslo | 2018 |
| Hewi Elektro AS | Holmestrand | 2000 |
| Hexeberg Holding AS | Oppaker | 2018 |
| Heyerdahl Holding Invest AS | Oslo | 2005 |
| HF Anlagenservice GmbH | At-4654 Bad Wimsbach-Neydharting | 2020 |
| HF Anlegg AS | Ytre Enebakk | 2008 |
| HF Bygg AS | Tønsberg | 2024 |
| HF Industriemontagen Franz Hofmaninger GmbH | At-4654 Bad Wimsbach-Neydharting | 2020 |
| HF Interior AB | Se-41104 Gothenburg | 2019 |
| Hf-Entreprenør AS | Fredrikstad | 2016 |
| HFB AS | Oslo | 2014 |
| Hfhbygg AS | Haugesund | 2018 |
| HFS Rør AS | Lier | 2023 |
| HG Bygg AS | Larvik | 2020 |
| HG Eiendomservice AS | Fana | 2025 |
| HG Elektro AS | Hareid | 2010 |
| HG Holding 1 AS | Stange | 2021 |
| HG Håndverksgruppen Norge AS | Oslo | 2012 |
| HG International AS | Hareid | 2009 |
| HG Maskin AS | Skien | 2020 |
| HG Montasje AS | Skedsmokorset | 2023 |
| HG Solutions SP. Z O.O. Nuf | Pl-81-336 Gdynia | 2013 |
| Hg-Bygg AS | Nodeland | 2009 |
| Hg-Byggservice AS | Randaberg | 2024 |
| Hg-Holding AS | Nodeland | 2009 |