| Tusvik Pulverlakk AS | Trondheim | 2020 |
| Tuul Holding AS | Larvik | 2020 |
| Tuverud Mek AS | Drammen | 1996 |
| Tvedestrand Bakeri AS | Tvedestrand | 2017 |
| Tveit Maskin Og Service AS | Sandnes | 2025 |
| Tveitamarka AS | Holmefjord | 2001 |
| Tveitane Sveis & Maskin AS | Sauda | 2014 |
| Tveito CNC AS | Gullaug | 2023 |
| Tverli Aut Holding AS | Ytre Enebakk | 2021 |
| Tverli Sveis AS | Ytre Enebakk | 2000 |
| Tverråirosa AS | Oslo | 2007 |
| Tverås Gårdsmat AS | Malm | 2020 |
| Tvillingene Sveis Og Mek AS | Voll | 2018 |
| Tvist Print AS | Snarøya | 2012 |
| Tweedy Todd Da | Fetsund | 2015 |
| TWS GmbH Technischer Wäschereiservice Nuf | De-12681 Berlin | 2018 |
| Tya Bakeri AS | Øvre Årdal | 2015 |
| Tyholmen Holding AS | Arendal | 2010 |
| Tynset Tre Og Betong AS | Tynset | 1990 |
| Tyo Automation Ålesund AS | Ålesund | 2006 |
| Type IT AS | Trondheim | 2003 |
| Typisk AS | Stange | 2016 |
| Typo'Nor AS | Hammerfest | 1987 |
| Tyras Sølvsmykker Vikingkunst I Sølv Og Andre Metaller Da | Tromsø | 2008 |
| Tyrikjøkken AS | Singsås | 1993 |
| Tyrilys AS | Drammen | 2018 |
| Tysnes Båt Og Vedlikehold AS | Lundegrend | 2025 |
| Tysse Mekaniske Verksted AS | Tyssebotnen | 1983 |
| Tysseland Smed & Mek Verksted AS | Årland | 1998 |
| Tyvsøy Marin & Mekaniske AS | Røst | 2018 |
| Tamek AS | Frogner | 1984 |
| Tig Weld A/S | Slattum | 1988 |
| Tingnes Sag og Høvleri A/S | Fagernes | 1988 |
| Tomma Aluminium AS | Husby | 1976 |
| Trailerbygg AS | Sokna | 1984 |
| Tydal Trappefabrikk A/S | Tydal | 1988 |
| Tynset Fisk og Fiskemat ANS | Tynset | 1988 |
| Tæsselædden AS | Sellebakk | 2021 |
| Törnkvist Mek&Konsulting AB | Se-712 31 Hällefors | 2025 |
| Tøftabrygg AS | Steinsland | 2017 |
| Tømmervåg Tre AS | Tustna | 2011 |
| Tømmerås AS | Eidsvoll Verk | 1994 |
| Tønnesen Rustfritt & Stål AS | Kristiansand S | 2022 |
| Tønsberg & Færder Marineservice AS | Nøtterøy | 2022 |
| Tønsberg Glass Holding AS | Borre | 2019 |
| Tønsberg Glassliperi Og Speilfabrikk AS | Borre | 2019 |
| Tønsberg Treverksted AS | Barkåker | 1997 |
| Tørdal Snikkerverksted AS | Tørdal | 2009 |
| Tørst Bryggeri AS | Halden | 2023 |
| Tøsse Brygghus AS | Tyssebotnen | 2023 |
| Tøyen Mineralvann Fabrikk | Oslo | 2014 |
| U Dahl AS | Sjøvegan | 2019 |
| Uab "Industriniu Resursu Sprendimai | Lt-92123 Klaipeda | 2026 |
| Uab 4SURFACE | Lt-91246 Klaipeda | 2024 |
| Uab Adoris Nuf | Lt-92243 Klaipeda | 2025 |
| Uab Alrosa | Lt-91266 Klaipeda | 2021 |
| Uab Altitoras Nuf | Lt-91247 Klaipeda | 2020 |
| Uab Constro | Oslo | 2024 |
| Uab Construction Line | Lt-92141 Klaipeda | 2023 |
| Uab Destran | Lt-92105 Klaipeda | 2022 |
| Uab Egersund Net | 72328 Taurage | 2008 |
| Uab Elde | 49282 Kaunas | 2019 |
| Uab Feliuga | 92195 Klapeida | 2007 |
| Uab Globalita | Lt-91213 Klaipeda | 2019 |
| Uab Husline Nuf | Lt-96157 Gargzdai | 2021 |
| Uab JSB Maritime | Lt-91246 Klaipeda | 2015 |
| Uab Klaikonta | Lt-93235 Klaipeda | 2015 |
| Uab Ksenima | Lt 94220 Klaipeda | 2020 |
| Uab Laivu Technika Nuf | Lt-92120 Klaipeda | 2019 |
| Uab Lido Marine Nuf | Lt-91248 Klaipeda | 2022 |
| Uab Magnoris Nuf | Lt-92243 Klalpeda | 2025 |
| Uab Magrus Nuf | Lt-95152 Klaipeda | 2018 |
| Uab Marino Projektai | Lt-92228 Klaipeda | 2019 |
| Uab Maviga Pro | Lt-94105 Klaipeda | 2024 |
| Uab Mes Service LT Nuf | Lt-92441 Klaipeda Dist. Mun | 2024 |
| Uab Migansa | Lt-91111 Klaipeda | 2016 |
| Uab Minsida | Lt-92123 Klaipeda | 2017 |
| Uab Reston Industries Nuf | Lt-92138 Klaipeda | 2023 |
| Uab Rndv Ferrum Nuf | Lt-91184 Klaipeda | 2025 |
| Uab Rndv Group Nuf | Lt-91184 Klaipeda | 2019 |
| Uab RV Consulting & Recruitment Nuf | Lt-94105 Klaipeda | 2026 |
| Uab Saulginta | Lt-68461 Marijampole | 2026 |
| Uab Siris LT | Lt-93186 Klaipeda | 2020 |
| Uab Skalas | Lt-03209 Vilnius | 2022 |
| Uab Stansefabrikken Automotive | Lt-20194 Ukmerges | 2018 |
| Uab Toromega Nuf | Lt-91229 Klaipeda | 2020 |
| Uab Toromega Welding Nuf | Lt-92109 Klaipeda | 2026 |
| Uab Uolus Nuf | Lt-91207 Klaipéda | 2018 |
| Uab Verslo Krantas | Lt-92226, Klaipeda | 2025 |
| Uab Vilesco | Lt-91266 Klaipeda | 2019 |
| Ube Gruppen AS | Lysaker | 2007 |
| Uddcomb International AB | Se-371 50 Karlskrona | 2023 |
| UFAS Holding AS | Ålesund | 1996 |
| Uglabekken AS | Trondheim | 2005 |
| Uglum Maskin AS | Sogndal | 2007 |
| Uhlen Drift Og Vedlikehold AS | Torpo | 2024 |
| Ui Depro Holding AS | Bryne | 2022 |
| Uj Trading AB | Moelv | 2004 |
| Uldal AS | Birkeland | 1988 |
| Ulefos AS | Ulefoss | 1999 |