| Kranoperatøren AS | Lier | 2024 |
| Kranpartner AS | Ølensvåg | 2026 |
| Kranproffen AS | Paradis | 2016 |
| Kransalaget AS | Strandebarm | 2010 |
| Kranstad Glassmontasje AS | Revetal | 2020 |
| Krapf AG Metall- Und Fassadenbau | Oslo | 2023 |
| Kratos Communications Limited | Tyne And Wear Ne11 0Nf | 2026 |
| Krauman AS | Andenes | 2017 |
| Kraus Graveservice AS | Åros | 2011 |
| Kravik Holding AS | Prestfoss | 2019 |
| KRB Holding AS | Lakselv | 2018 |
| Krb-Bygg AS | Notodden | 2016 |
| Kreate Sverige AB Nuf | Se-117 55 Stockholm | 2015 |
| Kreatel AS | Sandnes | 2007 |
| Kreativ Asfalt Og Steinlegging AS | Oslo | 2024 |
| Kreativ Bygg AS | Hønefoss | 2024 |
| Kreativ Gulv Behandling Ans | Skollenborg | 2003 |
| Kreativ Steinmontasje Da | Oslo | 2010 |
| Kreativbetong AS | Ålgård | 2022 |
| Kreativmaler AS | Oslo | 2022 |
| Kreativt Bygg AS | Lysaker | 2017 |
| Kreativt Kvalitetsbygg AS | Oslo | 2022 |
| Krefft Piotr Pitech Uslugi Elektrycz | 64200 Wejherowo | 2010 |
| Krefter Solutions AS | Lalm | 2021 |
| Kremmerne AS | Høylandet | 2024 |
| Kreno AS | Oslo | 2015 |
| Krenova AS | Gullaug | 1993 |
| Krer Holding AS | Drøbak | 2021 |
| Kreta BK5 AS | Svolvær | 2022 |
| Kreta Eiendom SA | Gr-74100 Rethymnon | 2019 |
| Krhd Holding AS | Hammerfest | 2018 |
| Kriaute House | 35100 Panevezys | 2015 |
| Kribs AS | Ankenes | 2026 |
| Kricam Holding AS | Ranheim | 2018 |
| Krigsvoll & Kjønnås AS | Budalen | 2019 |
| Krika Invest AS | Vear | 2021 |
| Krima Holding AS | Bangsund | 2008 |
| Krimar AS | Klæbu | 2005 |
| Krimar Eiendom AS | Klæbu | 2013 |
| Kringen Rør AS | Stjørdal | 2006 |
| Kris Agder Bygg AS | Arendal | 2022 |
| Kris Bygg AS | Oslo | 2017 |
| Kris Warchol AS | Hagan | 2020 |
| Kris-Bygg AS | Øksendal | 2026 |
| Kris-Pol AS | Oslo | 2008 |
| Kris-Pol S.C | 41-813 Zabrze | 2004 |
| Krisbau | Pl-56-200 Gora | 2007 |
| Krisbi AS | Rørvik | 2005 |
| Krisbygg AS | Sandefjord | 2019 |
| Krisbygg Service AS | Drammen | 2015 |
| Krispi Design AS | Spydeberg | 2018 |
| Kriss Consulting AS | Kristiansand S | 2021 |
| Kriss Nord AS | Kvalsund | 2016 |
| Kristen Holand Holding AS | Egersund | 2013 |
| Kristen Homme AS | Vennesla | 2008 |
| Kristen Verlo AS | Utvik | 2023 |
| Kristengård Og Myhrebakken Blikk AS | Lillesand | 2024 |
| Kristensen Maskin AS | Rognan | 1996 |
| Kristensen Vindusglass AS | Eidsvoll Verk | 2022 |
| Krister Guttormsen AS | Arneberg | 2023 |
| Kristian 4DES Gate Utbygging AS | Kristiansand S | 2016 |
| Kristian Dahl AS | Gressvik | 2021 |
| Kristian Eriksen Holding AS | Vestfossen | 2024 |
| Kristian G. Olsen AS | Melbu | 2024 |
| Kristian Gården & Sønner AS | Vågå | 1996 |
| Kristian H Larsen AS | Oslo | 2014 |
| Kristian Håland AS | Randaberg | 2012 |
| Kristian Maskin AS | Bru | 2015 |
| Kristian Og Frank Liland Ans | Lakselv | 1989 |
| Kristian Remi Tveitan AS | Stokke | 2014 |
| Kristian Robertsen AS | Husøysund | 2024 |
| Kristian Sjøli AS | Steinkjer | 2012 |
| Kristian Sollie Holding AS | Kristiansand S | 2016 |
| Kristian Steensgaard Rørtekniske AS | Oslo | 2017 |
| Kristian Størseth AS | Kviby | 2026 |
| Kristian Surdal Bygg & Eiendom AS | Stavanger | 2026 |
| Kristian Vik AS | Stryn | 2005 |
| Kristiania Farvehandel AS | Oslo | 2025 |
| Kristianne Holding AS | Stavern | 2003 |
| Kristiansand Bad AS | Kristiansand S | 2018 |
| Kristiansand Bygg & Vedlikehold AS | Kristiansand S | 2019 |
| Kristiansand Bygg AS | Kristiansand S | 2009 |
| Kristiansand Dykkeservice AS | Kristiansand S | 2021 |
| Kristiansand Elektro AS | Kristiansand S | 1999 |
| Kristiansand Engineering AS | Risør | 2016 |
| Kristiansand Gulv AS | Mosby | 2025 |
| Kristiansand Maler Youssef AS | Kristiansand S | 2025 |
| Kristiansand Montasje Og Industriservice AS | Tingvatn | 2010 |
| Kristiansand Stillas AS | Kristiansand S | 2014 |
| Kristiansand Tak Og Membran AS | Kristiansand S | 2021 |
| Kristiansand VVS AS | Kristiansand S | 2007 |
| Kristiansandrør AS | Mosby | 2022 |
| Kristiansen & Co Nuf | Dk-9560 Hadsund | 2024 |
| Kristiansen AS | Tønsberg | 2021 |
| Kristiansen Automasjon AS | Stange | 1992 |
| Kristiansen Blikk Og Vedlikehold AS | Stokke | 2023 |
| Kristiansen Group AS | Høvik | 2020 |
| Kristiansen Montasje AS | Drammen | 2015 |
| Kristiansen Mur Og Betongservice AS | Rolvsøy | 2016 |
| Kristiansen Murservice AS | Skjærhalden | 2012 |