| Persson Elektro AS | Haugesund | 1984 |
| Pertenta AS | Harstad | 2021 |
| Pertinax Vestfold AS | Vear | 2008 |
| Pet Installasjon AS | Tønsberg | 1982 |
| Petar Patarijevic | Moss | 2008 |
| Peter Asle Mona AS | Snåsa | 2008 |
| Peter Axelsson | 380 53 Fliseryd | 2014 |
| Peter Bartak | Sørumsand | 2004 |
| Peter Byggservice AS | Oslo | 2026 |
| Peter Dekker Installaties BV Nuf | Moss | 2009 |
| Peter Falk Byggentreprenad Kommanditbolag | Se-681 94 Kristinehamn | 2000 |
| Peter Gullbergs Malerfirma AS | Oslo | 2007 |
| Peter Johansson Kvarnvik Polska | Tistedal | 2014 |
| Peter Lonsdorfer GmbH Co KG | 25813 Husum | 2009 |
| Peter Malerservice AS | Rådal | 2026 |
| Peter Seitz Maling Og Anlegg AS | Hamnvik | 2014 |
| Peters Byggservice AS | Lommedalen | 2008 |
| Petersen AS | Tromsø | 2001 |
| Petersen Bygg & Betong AS | Gjerstad | 2019 |
| Petersen Skonnord Bygg Og Eiendom AS | Ridabu | 2015 |
| Peto Maskin Ans | Finnsnes | 1995 |
| Petter a Olsen AS | Vesterøy | 2005 |
| Petter Bakøy AS | Rissa | 2008 |
| Petter Bakøy Holding AS | Rissa | 2008 |
| Petter Dahl Byggteam AS | Nyborg | 2021 |
| Petter Dahl Property AS | Nyborg | 2017 |
| Petter Dahl Services AS | Nyborg | 2019 |
| Petter Eriksen Blikkenslagerforretning AS | Vettre | 1994 |
| Petter Løkken Maskin AS | Gan | 2022 |
| Petter O.Mathisen AS | Næroset | 2024 |
| Petter Smart AS | Askim | 2019 |
| Petter Smart Montasje AS | Loddefjord | 2019 |
| Petter's Snekkerservice AS | Tonstad | 2015 |
| Pettersen & Helgesen Bygg Og Tømrerservice AS | Skedsmokorset | 1995 |
| Pettersen Anlegg AS | Sogndal | 2015 |
| Pettersen AS | Drammen | 2005 |
| Pettersen Bygg AS | Finnsnes | 2013 |
| Pettersen Bygg Og Renovering AS | Hansnes | 2012 |
| Pettersen Byggtjenester AS | Namnå | 2017 |
| Pettersen Drift AS | Sleneset | 2010 |
| Pettersen Entreprenør AS | Stanghelle | 2023 |
| Pettersen Gruppen AS | Loddefjord | 2013 |
| Pettersen Holding & Invest AS | Arendal | 2023 |
| Pettersen Maskin AS | Fåvang | 2012 |
| Pettersen Mur & Flis AS | Larvik | 2022 |
| Pettersen Snekker & Service AS | Herøy | 2021 |
| Pettersen Snekkertjenester AS | Kløfta | 2021 |
| Pettersen Totalservice AS | Moss | 2024 |
| Pettersen Utvikling AS | Tromsø | 2003 |
| Pettersen VVS & Industriservice AS | Hamar | 2026 |
| Pettersen-Bygg AS | Alta | 2023 |
| Pettersens El Installasjon AS | Rakkestad | 1985 |
| Pettersens Gutta Holding AS | Rakkestad | 2020 |
| Petterson & Barr Lås Och Larm AB | 754 29 Uppsala | 2001 |
| Petterson Og Haman Montage AB | Tromsø | 2000 |
| Pev Invest AS | Stavanger | 2018 |
| Pewi AS | Mjøndalen | 1994 |
| Pexo AS | Engerdal | 2015 |
| Peyma Eiendom AS | Alta | 2013 |
| Peyma Entreprenør AS | Alta | 2013 |
| Peyma Holding AS | Alta | 2022 |
| PF Bygg AS | Ellingsøy | 2018 |
| PF Hera | Porsgrunn | 1998 |
| PF Maskin AS | Ålesund | 2018 |
| Pfa Elektro AS | Geilo | 2012 |
| PFC Elektro AS | Bergen | 2018 |
| Pfeil Entreprenader AB | Se-433 30 Partille | 2001 |
| PFP Entreprenør AS | Oslo | 2018 |
| PFR AS | Stavanger | 2019 |
| PFR Bygg AS | Gjøvik | 2025 |
| PG - Byggutvikling AS | Porsgrunn | 2012 |
| PG Bygg AS | Bjørkelangen | 2017 |
| PG Bygg Og Eiendom AS | Porsgrunn | 2021 |
| PG Byggeservice AS | Sandnes | 2023 |
| PG Installasjon AS | Årdal I Ryfylke | 2001 |
| Pg-Bygg AS | Sandane | 2023 |
| Pga Eiendom AS | Hønefoss | 1986 |
| Pga Maskin AS | Sandefjord | 2025 |
| PGH Bygg AS | Fauske | 2020 |
| PGM Service AS | Rolvsøy | 2020 |
| PGS Bygg AS | Ottestad | 2004 |
| Pgsnekkern AS | Inderøy | 2018 |
| PH Bygg AS | Hamresanden | 2022 |
| PH Eiendom & Holding AS | Kleppe | 2005 |
| PH Elektro AS | Kristiansand S | 2023 |
| PH Energi AS | Birkeland | 2005 |
| PH Holding AS | Stol | 2022 |
| PH Maskin AS | Grimstad | 2022 |
| PH Service AS | Hamar | 2017 |
| Pharmatec GmbH | Oslo | 2023 |
| PHB Eiendom AS | Øyestranda | 2011 |
| PHB Maskin AS | Trondheim | 2023 |
| Phibor Entreprises Nuf Norway | Fr-94150 Rungis | 2013 |
| Philip Baginski AS | Rådal | 2023 |
| Philip Lys Ide AS | Svelvik | 2019 |
| Philips Medical Systems Nederland B.V. | Nl-5684Pc Best | 2018 |
| Phillips Eiendom Trondhjem AS | Tynset | 2020 |
| Phoebe Ile De France Nuf | Fr-91940 Les Ulis | 2026 |
| Phoenix Baudienstleistungen GmbH | Straume | 2010 |
| Phoenix Me (Norway) AS | Nordagutu | 2024 |