# The 50 largest companies in Trondheim

Tamtam tracks 100 companies headquartered in Trondheim. This list ranks the 50 largest by number of employees on LinkedIn, led by Norwegian University of Science and Technology (NTNU), Trondheim kommune and St. Olavs hospital, Trondheim University Hospital. Their median headcount is 330. Half of them were founded in 1983 or later.

The largest companies in Trondheim are primarily public sector institutions and technology firms. Key players include the Norwegian University of Science and Technology (NTNU), a major academic institution, and Trondheim kommune, the municipal administration. St. Olavs hospital is a significant healthcare provider, while SINTEF is a prominent research organization. Nordic Semiconductor specializes in wireless communication technology, and HENT AS is a large construction contractor. SpareBank 1 SMN provides financial services, and Norsk helsenett SF focuses on IT services for the healthcare sector. Bunnpris is a retail chain, and the Norwegian Environment Agency is a government body.

A notable pattern among these companies is the strong presence of public administration, education, and healthcare, alongside a robust technology sector. Many of these organizations, such as NTNU and St. Olavs hospital, are deeply integrated into the city's infrastructure and economy. The IT services sector is also well-represented, with companies like Signicat, Q-Free, and Hemit HF contributing to digital solutions in various fields.

🇳🇴 Trondheim · 50 companies · Updated Nov 11, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Norwegian University of Science and Technology (NTNU)](https://www.tamtam.ai/c/norwegian-university-of-science-and-technology-ntnu) (ntnu.no)<br>A prestigious academic institution in Trondheim specializing in technology, natural sciences, social sciences, arts, medicine, architecture, and fine art | Higher Education | 🇳🇴 Trondheim | 9,737 | 1910 |
| 2 | [Trondheim kommune](https://www.tamtam.ai/c/trondheim-kommune) (trondheim.kommune.no)<br>A municipal organization in Trondheim facilitating positive development by engaging with residents, partners, and employees to strengthen the city's future | Government Administration | 🇳🇴 Trondheim | 4,875 | 1000 |
| 3 | [St. Olavs hospital, Trondheim University Hospital](https://www.tamtam.ai/c/st-olavs-hospital-trondheim-university-hospital) (stolav.no)<br>An integrated hospital and university within Norway's Regional Health Authority, focusing on patient treatment, research, education, and professional training | Hospitals and Health Care | 🇳🇴 Trondheim | 3,884 | 1902 |
| 4 | [SINTEF](https://www.tamtam.ai/c/sintef) (sintef.no)<br>A European research organization specializing in technology, natural sciences, and social sciences, conducting contract research and development projects for various sectors since 1950 | Research Services | 🇳🇴 Trondheim | 2,621 | 1950 |
| 5 | [Nordic Semiconductor](https://www.tamtam.ai/c/nordic-semiconductor) (nordicsemi.com)<br>Norwegian semiconductor company specializing in wireless communication technology for IoT, offering Bluetooth Low Energy, ANT+, Thread, Zigbee, LTE-M/NB-IoT, and Wi-Fi solutions | Semiconductor Manufacturing | 🇳🇴 Trondheim | 1,410 | 1983 |
| 6 | [HENT AS](https://www.tamtam.ai/c/hent-as) (hent.no)<br>A leading total contractor and project developer in Norway, delivering large projects for public and private clients across Scandinavia since 1980 | Construction | 🇳🇴 Trondheim | 995 | 1980 |
| 7 | [SpareBank 1 SMN](https://www.tamtam.ai/c/sparebank-1-smn) (sparebank1.no)<br>A leading financial services group in the region with over 1,100 staff, offering regional banking services across multiple locations in Norway | Financial Services | 🇳🇴 Trondheim | 963 |  |
| 8 | [Norsk helsenett SF](https://www.tamtam.ai/c/norsk-helsenett-sf) (nhn.no)<br>The company ensures secure and efficient digital communication in the healthcare sector, connecting hospitals, GPs, and communities through electronic infrastructure and e-health solutions | IT Services and IT Consulting | 🇳🇴 Trondheim | 912 | 2004 |
| 9 | [Bunnpris](https://www.tamtam.ai/c/bunnpris) (bunnpris.no)<br>A family-owned chain of over 250 grocery stores, founded in 1981, known for community involvement and providing a unique shopping experience | Retail | 🇳🇴 Trondheim | 631 | 1981 |
| 10 | [Norwegian Environment Agency](https://www.tamtam.ai/c/norwegian-environment-agency) (miljodirektoratet.no)<br>This agency in Norway focuses on preserving nature, reducing pollution, shaping environmental policy, monitoring the environment, and collaborating with relevant sectors | Government Administration | 🇳🇴 Trondheim | 618 | 2013 |
| 11 | [Signicat](https://www.tamtam.ai/c/signicat) (signicat.com)<br>It provides digital identity services, supporting various data sources for user authentication, electronic signing, and identity-proofing across Europe. | IT Services and IT Consulting | 🇳🇴 Trondheim | 551 | 2006 |
| 12 | [Q-Free](https://www.tamtam.ai/c/q-free) (q-free.com)<br>Global provider of intelligent transportation systems enhancing traffic flow, road safety, and air quality through digital infrastructure solutions. | IT Services and IT Consulting | 🇳🇴 Trondheim | 537 |  |
| 13 | [Torghatten](https://www.tamtam.ai/c/torghatten) (torghatten.no)<br>A Norway-based company offering various products or services | Maritime Transportation | 🇳🇴 Trondheim | 522 | 1878 |
| 14 | [Arbeidstilsynet](https://www.tamtam.ai/c/arbeidstilsynet) (arbeidstilsynet.no)<br>The company ensures compliance with labor laws, provides guidance to leaders and employees for a safe work environment, and prohibits inappropriate comments on their platform | Government Administration | 🇳🇴 Trondheim | 493 | 1892 |
| 15 | [Hemit HF](https://www.tamtam.ai/c/hemit-hf) (hemit.no)<br>A regional IT department for healthcare in Central Norway, providing innovative solutions and services to hospitals in the region, supporting over 20,000 users | IT Services and IT Consulting | 🇳🇴 Trondheim | 466 | 2003 |
| 16 | [Autronica Fire and Security AS](https://www.tamtam.ai/c/autronica-fire-and-security-as) (autronicafire.com)<br>Innovative creator of cutting-edge safety products, including the first fire alarm, committed to continuous improvements for protecting life, environment, and property | Appliances, Electrical, and Electronics Manufacturing | 🇳🇴 Trondheim | 427 | 1957 |
| 17 | [UKA](https://www.tamtam.ai/c/uka) (uka.no)<br>Norway's largest cultural festival, organized by Trondheim's students every two years, featuring concerts, theater, classes, and a vibrant atmosphere for all | Entertainment Providers | 🇳🇴 Trondheim | 425 | 1917 |
| 18 | [OKEA ASA](https://www.tamtam.ai/c/okea-asa) (okea.no)<br>A leading operator on the Norwegian continental shelf, focused on value creation, growth through M&A, and capital discipline Listed on Oslo Børs | Oil and Gas | 🇳🇴 Trondheim | 414 | 2015 |
| 19 | [SpareBank 1 Regnskapshuset SMN AS](https://www.tamtam.ai/c/sparebank-1-regnskapshuset-smn-as) (sparebank1.no)<br>Provider of financial services, business and agriculture accounting, property management, and ERP solutions Emphasis on local presence with over 40 office locations Part of SpareBank 1 group | Accounting | 🇳🇴 Trondheim | 404 | 1985 |
| 20 | [NINA - Norwegian Institute for Nature Research](https://www.tamtam.ai/c/nina-norwegian-institute-for-nature-research) (nina.no)<br>Leading institution for applied ecological research, specializing in genetic, population, ecosystem, and landscape level studies in various environments Also focuses on international conventions and conflict resolution | Research Services | 🇳🇴 Trondheim | 368 | 1988 |
| 21 | [Sikt – Norwegian Agency for Shared Services in Education and Research](https://www.tamtam.ai/c/sikt-norwegian-agency-for-shared-services-in-education-and-research) (sikt.no)<br>The company develops and provides services for education and research in Norway, focusing on digitization, data sharing, and open research | Government Administration | 🇳🇴 Trondheim | 368 | 2022 |
| 22 | [NTNU Faculty of Medicine and Health Sciences](https://www.tamtam.ai/c/ntnu-faculty-of-medicine-and-health-sciences) (ntnu.no)<br>A teaching and research institution in the field of medicine and health, offering education and conducting research in various related areas | Higher Education | 🇳🇴 Trondheim | 362 |  |
| 23 | [Sit (Studentsamskipnaden i Gjøvik, Ålesund og Trondheim)](https://www.tamtam.ai/c/sit-studentsamskipnaden-i-gjovik-alesund-og-trondheim) (sit.no)<br>The company supports students in Gjøvik, Ålesund, and Trondheim with safe and efficient study environments through housing, childcare, dining, and more | Civic and Social Organizations | 🇳🇴 Trondheim | 333 | 1948 |
| 24 | [SINTEF Ocean](https://www.tamtam.ai/c/sintef-ocean) (sintef.no)<br>Conducting research and innovation for ocean space, focusing on marine technology and biomarine research for sustainable use of the ocean | Research Services | 🇳🇴 Trondheim | 331 | 2017 |
| 25 | [Egon](https://www.tamtam.ai/c/egon) (egon.no)<br>A 1984-originated restaurant offering a cozy atmosphere, friendly service, and delicious food, aiming to create an environment where everyone feels at home | Restaurants | 🇳🇴 Trondheim | 330 | 1984 |
| 26 | [Helseplattformen](https://www.tamtam.ai/c/helseplattformen) (helseplattformen.no)<br>Providing a unified health record system for all levels of healthcare in Central Norway to streamline patient care and data management | Technology, Information and Media | 🇳🇴 Trondheim | 322 | 2019 |
| 27 | [ScaleAQ](https://www.tamtam.ai/c/scaleaq) (scaleaq.com)<br>Global provider of aquaculture equipment, technology, and solutions Committed to sustainable growth, innovation, and leadership in the industry worldwide | Maritime Transportation | 🇳🇴 Trondheim | 315 |  |
| 28 | [SINTEF Energy Research](https://www.tamtam.ai/c/sintef-energy-research) (sintef.no)<br>An applied research institute focused on innovative energy solutions, including energy efficiency, renewable energy integration, CO2 capture, and gas technology | Research Services | 🇳🇴 Trondheim | 284 | 1951 |
| 29 | [Lindbak](https://www.tamtam.ai/c/lindbak) (lindbak.no)<br>A family-owned company established in 1958, specializing in office supplies, furniture, IT solutions, printing, and audiovisual equipment, serving both private and public sectors nationwide | Retail | 🇳🇴 Trondheim | 268 | 1958 |
| 30 | [Coop Midt-Norge SA](https://www.tamtam.ai/c/coop-midt-norge-sa) (coop.no)<br>A large member-owned retail company with a focus on sustainability, offering member benefits, local support, and operating in multiple communities | Retail | 🇳🇴 Trondheim | 257 | 1878 |
| 31 | [Boa Offshore](https://www.tamtam.ai/c/boa-offshore) (boa.no)<br>A long-standing family business based in Norway, specialized in providing offshore services worldwide including sea transportation, rig moves, subsea installations, and salvage operations | Maritime Transportation | 🇳🇴 Trondheim | 249 | 1975 |
| 32 | [FARA AS](https://www.tamtam.ai/c/fara-as) (fara.no)<br>Supplier of IT solutions for public transport, specializing in electronic ticketing, real-time information systems, fleet management, and passenger information Nordic market leader expanding globally | IT Services and IT Consulting | 🇳🇴 Trondheim | 209 | 2005 |
| 33 | [AquaGen](https://www.tamtam.ai/c/aquagen) (aquagen.no)<br>Develops and delivers genetic material for Atlantic salmon and rainbow trout to the global sea-farming industry, focusing on health, welfare, growth, and quality. | Biotechnology Research | 🇳🇴 Trondheim | 193 | 1985 |
| 34 | [The Geological Survey of Norway](https://www.tamtam.ai/c/the-geological-survey-of-norway) (ngu.no)<br>National institution in Norway specializing in studying bedrock, mineral resources, surficial deposits, and groundwater for research and resource management purposes | Government Administration | 🇳🇴 Trondheim | 193 | 1858 |
| 35 | [Kiona](https://www.tamtam.ai/c/kiona) (kiona.com)<br>Proptech company offering software and services for technical property management, energy optimization, refrigeration management, and environmental monitoring to reduce energy usage and greenhouse gas emissions | Software Development | 🇳🇴 Trondheim | 187 |  |
| 36 | [Maske Gruppen AS](https://www.tamtam.ai/c/maske-gruppen-as) (maske.no)<br>A leading wholesaler providing supplies to private and public sectors, with a wide range of products, competitive prices, high quality, and expertise | Wholesale | 🇳🇴 Trondheim | 182 | 1858 |
| 37 | [BN Bank ASA](https://www.tamtam.ai/c/bn-bank-asa) (bnbank.no)<br>A Norwegian bank focused on providing simple, profitable services nationwide Owned by SpareBank1-banks, offering financing for residential and commercial projects | Banking | 🇳🇴 Trondheim | 176 | 1961 |
| 38 | [Grilstad AS](https://www.tamtam.ai/c/grilstad-as) (grilstad.no)<br>A leading Norwegian producer of meat products, specializing in cured meats and frozen hamburgers, with a focus on quality, tradition, and creating food joy | Manufacturing | 🇳🇴 Trondheim | 175 | 1957 |
| 39 | [Safetec](https://www.tamtam.ai/c/safetec) (safetec.no)<br>A leading consultancy offering risk management, environmental services, and asset performance expertise for energy, transportation, industrial assets, and public sector | Business Consulting and Services | 🇳🇴 Trondheim | 172 | 1984 |
| 40 | [Din Salgskonsulent AS](https://www.tamtam.ai/c/din-salgskonsulent-as) (dinsalgskonsulent.no)<br>A company specializing in distribution of insurance products in Norway, focusing on respect, engagement, and quality in providing tailored solutions to clients | Financial Services | 🇳🇴 Trondheim | 171 | 2008 |
| 41 | [Vinde Tilkomstteknikk AS](https://www.tamtam.ai/c/vinde-tilkomstteknikk-as) (vinde-tt.no)<br>Specialized in rope access, offering electrical, mechanical, industrial painting, NDT services, including personnel supply, project management, engineering for complete projects | Oil and Gas | 🇳🇴 Trondheim | 168 | 2007 |
| 42 | [NORBIT ASA](https://www.tamtam.ai/c/norbit-asa) (norbit.com)<br>Global provider of tailored technology solutions for maritime, connectivity, and R&D markets, with headquarters in Trondheim and manufacturing in Norway | Technology, Information and Media | 🇳🇴 Trondheim | 167 | 1995 |
| 43 | [EiendomsMegler 1 Midt-Norge](https://www.tamtam.ai/c/eiendomsmegler-1-midt-norge) (eiendomsmegler1.no)<br>A leading real estate brokerage company in Mid-Norway, providing services for the sale of residential, vacation, and commercial properties through multiple branches | Real Estate | 🇳🇴 Trondheim | 167 |  |
| 44 | [Inventas](https://www.tamtam.ai/c/inventas) (inventas.no)<br>A design agency with multiple offices in Norway offering services in interaction, product, service, visual design, mechanics, embedded systems, robotics, and IoT | Design Services | 🇳🇴 Trondheim | 165 | 1997 |
| 45 | [Sabrura Sticks & Sushi](https://www.tamtam.ai/c/sabrura-sticks-and-sushi) (sabrurasushi.no)<br>A Norwegian franchise concept offering fresh sushi and Asian sticks made from high-quality local ingredients, served in restaurants and available for takeaway | Restaurants | 🇳🇴 Trondheim | 165 | 2012 |
| 46 | [Sticos AS](https://www.tamtam.ai/c/sticos-as) (sticos.no)<br>Integrated provider of safe, high-quality, innovative services and technologies for the subsea industry, including survey, installation, intervention, IMR, and recycling. | Software Development | 🇳🇴 Trondheim | 163 | 1983 |
| 47 | [Dronning Mauds Minne Høgskole for barnehagelærerutdanning](https://www.tamtam.ai/c/dronning-mauds-minne-hogskole-for-barnehagelaererutdanning) (dmmh.no)<br>An established foundation in Norway offering Early Childhood Education and Care programs, focusing on student and staff exchange, international cooperation, and research projects | Higher Education | 🇳🇴 Trondheim | 154 | 1947 |
| 48 | [Jordbærpikene](https://www.tamtam.ai/c/jordbaerpikene) (jordbarpikene.no)<br>The company is a cafe concept started in 2003, offering food and cakes made from scratch with fresh seasonal ingredients, now part of Bitastad AS | Restaurants | 🇳🇴 Trondheim | 152 | 2003 |
| 49 | [Weatherford Petroleum Consultants AS](https://www.tamtam.ai/c/weatherford-petroleum-consultants-as) (reslab.no)<br>A team of 50 consultants offering top-tier consulting services in various fields of geology, geophysics, reservoir engineering, and production technology with advanced software tools | Oil and Gas | 🇳🇴 Trondheim | 150 |  |
| 50 | [Big Bite Submarines AS](https://www.tamtam.ai/c/big-bite-submarines-as) (bigbite.no)<br>A sought-after franchise concept offering fresh fast food with 53 locations mainly in shopping centers, focused on quality, freshness, and affordability Headquarters in Trondheim | Food and Beverage Services | 🇳🇴 Trondheim | 116 | 1997 |

## How this list is built

Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 11, 2026.

## The same list elsewhere in Norway

- [The largest companies in Norway](https://www.tamtam.ai/l/largest-companies-norway) (2,027)
- [The largest companies in Akershus](https://www.tamtam.ai/l/largest-companies-akershus) (198)
- [The largest companies in Vestland](https://www.tamtam.ai/l/largest-companies-vestland) (150)
- [The largest companies in Rogaland](https://www.tamtam.ai/l/largest-companies-rogaland) (147)
- [The largest companies in Trøndelag](https://www.tamtam.ai/l/largest-companies-trondelag) (134)
- [The largest companies in Agder](https://www.tamtam.ai/l/largest-companies-agder) (59)
- [The largest companies in Møre og Romsdal](https://www.tamtam.ai/l/largest-companies-more-og-romsdal) (57)
- [The largest companies in Innlandet](https://www.tamtam.ai/l/largest-companies-innlandet) (44)
- [The largest companies in Vestfold](https://www.tamtam.ai/l/largest-companies-vestfold) (43)
- [The largest companies in Buskerud](https://www.tamtam.ai/l/largest-companies-buskerud) (40)
- [The largest companies in Troms](https://www.tamtam.ai/l/largest-companies-troms) (38)
- [The largest companies in Nordland](https://www.tamtam.ai/l/largest-companies-nordland) (27)
- [The largest companies in Oslo](https://www.tamtam.ai/l/largest-companies-oslo) (768)
- [The largest companies in Bergen](https://www.tamtam.ai/l/largest-companies-bergen) (108)
- [The largest companies in Stavanger](https://www.tamtam.ai/l/largest-companies-stavanger) (71)
- [The largest companies in Kristiansand](https://www.tamtam.ai/l/largest-companies-kristiansand) (30)
- [The largest companies in Tromsø](https://www.tamtam.ai/l/largest-companies-tromso) (29)
- [The largest companies in Sandnes](https://www.tamtam.ai/l/largest-companies-sandnes) (28)

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Source: https://www.tamtam.ai/l/largest-companies-trondheim