| Phoenix-Bygg Og Vedlikehold AS | Flaktveit | 2025 |
| Phoenix-Holding AS | Flaktveit | 2025 |
| Phu Drewniak | 24-100 Pulawy | 2012 |
| Phu Elektrolino Norbert Michalczyk | 46-081 Dobrzen Wielki | 2015 |
| Phu Joowy Michal Marek Zbikowski | 70-772 Szczecin | 2005 |
| Phu Modernpol Robert Sobon | Pl-27400 Chmielow | 2019 |
| Pi AS | Nesttun | 1986 |
| Picab Sweden AB | Se-615 23 Valdemarsvik | 1998 |
| Pico Bygg AS | Solbergelva | 1996 |
| Pietaris AS | Kløfta | 2012 |
| Pihl Elektro AS | Bønes | 2006 |
| Piktogram Sp.Zo.O | Pl-87-820 Kowal | 2014 |
| Pilar Bergen Stillas AS | Hylkje | 1989 |
| Pilar Entreprenør AS | Tromsø | 2019 |
| Pilar Førde Stillas AS | Førde | 2009 |
| Pilebyg Nuf | Rauland | 2008 |
| Pilestredet Rørservice AS | Oslo | 2025 |
| Piller Germany GmbH & Co. KG | De-37520 Osterode Am Harz | 2021 |
| Pilnsabiedriba CCC Nuf | Oslo | 2008 |
| Pilterud Panorama AS | Vikersund | 2017 |
| Piluri AS | Fjerdingby | 2026 |
| Pim Bygg AS | Tistedal | 2025 |
| Pim Marine Nuf | Pl-83-250 Skarszewy | 2025 |
| Pim Mekk-Elektro AS | Torangsvåg | 2023 |
| Pimmo Entreprenør AS | Jar | 2014 |
| Pingvin Kulde AS | Skibotn | 2023 |
| Pinka Bygg AS | Hemsedal | 2019 |
| Pinne AS | Stryn | 2026 |
| Pinten Utvikling AS | Steinberg | 2013 |
| Piotr Bukowski | 80-350 Gdansk | 2006 |
| Piotr Chronowski Renovation Consturction and Import-Export Nuf | 33 395 Chelmiec | 2005 |
| Piotr Dajer | 26-225 Gowarczow | 2009 |
| Piotr Haniszewski | Grålum | 2007 |
| Piotr KL Bygg AS | Oslo | 2022 |
| Piotr Klejman Bygningshåndverker | Grålum | 2004 |
| Piotr Kowalski Bud | Grålum | 2007 |
| Piotr Kozielec Koz | 34-451 Tylmanowa | 2007 |
| Piotr Szulc AS | Nodeland | 2015 |
| Piotr Wojciechowski Piotr | 77-307 Slupsk | 2007 |
| Piotr Wozniak | 45-180 Sopot | 2007 |
| Piotr Zakrzewski | 13-300 N M Lubawskie | 2007 |
| Piotr Zieciak - Usl Budowlane | 82-103 Stenga | 2006 |
| Pip Invest AS | Sandefjord | 1988 |
| Pipe & Ildsted AS | Kvaløya | 2016 |
| Pipe Eksperten AS | Halden | 2025 |
| Pipe R.Spesialisten AS | Bøfjorden | 2012 |
| Pipebeslagspesialisten AS | Tananger | 2026 |
| Pipefiks AS | Vennesla | 2014 |
| Pipefiks Grimstad AS | Grimstad | 2024 |
| Pipekompaniet AS | Kolsås | 2019 |
| Pipemannen Bergen AS | Mathopen | 2023 |
| Piper Og Ildsteder AS | Tromsø | 2016 |
| Piperehab AS | Langevåg | 2024 |
| Piperehabilitering AS | Skien | 2025 |
| Piperehabilitering Sør-Øst AS | Steinsholt | 2021 |
| Piperep AS | Kløfta | 2013 |
| Pipespesialisten Stolt Andersen Da | Sandnes | 2008 |
| Pipeteam AS | Surnadal | 2023 |
| Pipeteknikk AS | Skien | 1992 |
| Pisau Byggmester AS | Nesttun | 2026 |
| Pit Klaudiusz Andrzej Krzywdzinzki | 81-187 Gdynia | 2006 |
| Pittore Holding AS | Oslo | 2017 |
| Pivatic OY | Fi-05800 Hyvinkää | 2019 |
| Pivots Engineering Oü Nuf | 11711 Tallinn | 2014 |
| Pixnord AS | Hagan | 1987 |
| PJ Bygg O Fastighetservice AB | Oslo | 1997 |
| PJ Industrimontage Aps | Dk-9440 Aabybro | 2016 |
| PJ Monter Og Service AS | Bodø | 2025 |
| PJ Multiservice AS | Sveio | 2025 |
| Pj-Holding AS | Skien | 2022 |
| Pja Holding AS | Grimstad | 2009 |
| PJH Holding AS | Mosjøen | 2005 |
| PJJ Holding AS | Ålgård | 2013 |
| PJK Precision Engineering Ltd | W12 Vn23 | 2023 |
| PJL Holding AS | Mandal | 2009 |
| Pjål AS | Farsund | 2023 |
| PK Anlegg & Eiendom AS | Søgne | 2024 |
| PK Anlegg AS | Sagstua | 2019 |
| PK Byggservice AS | Oslo | 2016 |
| PK Entreprenør AS | Søgne | 1982 |
| PK Hus AS | Kongsberg | 1994 |
| PK Investment | Ee-75312 Harjumaa | 2014 |
| PK Maskin AS | Kvernaland | 2020 |
| PK Maskinservice AS | Alta | 2026 |
| PK Oppussing AS | Steinberg | 2025 |
| PK Oslo Holding AS | Oslo | 2023 |
| PK Rør AS | Lommedalen | 2023 |
| PK Service AS | Ranheim | 1999 |
| PK Snekkerservice AS | Gjettum | 2025 |
| PK Strøm AS | Rognan | 2004 |
| PK Strøm Holding AS | Rognan | 2020 |
| PK Øverdal AS | Tinn Austbygd | 2023 |
| PKH Montage Aps | 8370 Hadsten | 2024 |
| PKJ Service AS | Torvastad | 2023 |
| Pkkm AS | Hamar | 2005 |
| PKM AS | Tromsø | 2014 |
| PKR Holdings AS | Trøgstad | 2014 |
| PL Elektro AS | Skogn | 2025 |
| PL Tak Ans | Oslo | 2006 |
| Placoplatre | Fr-92400 Courbevoie | 2022 |