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.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Norwegian University of Science and Technology (NTNU)ntnu.no
A prestigious academic institution in Trondheim specializing in technology, natural sciences, social sciences, arts, medicine, architecture, and fine art |
9,737 | |||
| 2 |
Trondheim kommunetrondheim.kommune.no
A municipal organization in Trondheim facilitating positive development by engaging with residents, partners, and employees to strengthen the city's future |
4,875 | |||
| 3 |
St. Olavs hospital, Trondheim University Hospitalstolav.no
An integrated hospital and university within Norway's Regional Health Authority, focusing on patient treatment, research, education, and professional training |
3,884 | |||
| 4 | 2,621 | ||||
| 5 |
Nordic Semiconductornordicsemi.com
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 |
1,410 | |||
| 6 | 995 | ||||
| 7 |
SpareBank 1 SMNsparebank1.no
A leading financial services group in the region with over 1,100 staff, offering regional banking services across multiple locations in Norway |
963 | |||
| 8 |
Norsk helsenett SFnhn.no
The company ensures secure and efficient digital communication in the healthcare sector, connecting hospitals, GPs, and communities through electronic infrastructure and e-health solutions |
912 | |||
| 9 |
Bunnprisbunnpris.no
A family-owned chain of over 250 grocery stores, founded in 1981, known for community involvement and providing a unique shopping experience |
631 | |||
| 10 |
Norwegian Environment Agencymiljodirektoratet.no
This agency in Norway focuses on preserving nature, reducing pollution, shaping environmental policy, monitoring the environment, and collaborating with relevant sectors |
618 | |||
| 11 |
Signicatsignicat.com
It provides digital identity services, supporting various data sources for user authentication, electronic signing, and identity-proofing across Europe. |
551 | |||
| 12 |
Q-Freeq-free.com
Global provider of intelligent transportation systems enhancing traffic flow, road safety, and air quality through digital infrastructure solutions. |
537 | |||
| 13 | 522 | ||||
| 14 |
Arbeidstilsynetarbeidstilsynet.no
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 |
493 | |||
| 15 | 466 | ||||
| 16 |
Autronica Fire and Security ASautronicafire.com
Innovative creator of cutting-edge safety products, including the first fire alarm, committed to continuous improvements for protecting life, environment, and property |
427 | |||
| 17 | 425 | ||||
| 18 | 414 | ||||
| 19 |
SpareBank 1 Regnskapshuset SMN ASsparebank1.no
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 |
404 | |||
| 20 |
NINA - Norwegian Institute for Nature Researchnina.no
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 |
368 | |||
| 21 |
Sikt – Norwegian Agency for Shared Services in Education and Researchsikt.no
The company develops and provides services for education and research in Norway, focusing on digitization, data sharing, and open research |
368 | |||
| 22 |
NTNU Faculty of Medicine and Health Sciencesntnu.no
A teaching and research institution in the field of medicine and health, offering education and conducting research in various related areas |
362 | |||
| 23 |
Sit (Studentsamskipnaden i Gjøvik, Ålesund og Trondheim)sit.no
The company supports students in Gjøvik, Ålesund, and Trondheim with safe and efficient study environments through housing, childcare, dining, and more |
333 | |||
| 24 |
SINTEF Oceansintef.no
Conducting research and innovation for ocean space, focusing on marine technology and biomarine research for sustainable use of the ocean |
331 | |||
| 25 | 330 | ||||
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| 26 |
Helseplattformenhelseplattformen.no
Providing a unified health record system for all levels of healthcare in Central Norway to streamline patient care and data management |
322 | |||
| 27 |
ScaleAQscaleaq.com
Global provider of aquaculture equipment, technology, and solutions Committed to sustainable growth, innovation, and leadership in the industry worldwide |
315 | |||
| 28 |
SINTEF Energy Researchsintef.no
An applied research institute focused on innovative energy solutions, including energy efficiency, renewable energy integration, CO2 capture, and gas technology |
284 | |||
| 29 |
Lindbaklindbak.no
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 |
268 | |||
| 30 |
Coop Midt-Norge SAcoop.no
A large member-owned retail company with a focus on sustainability, offering member benefits, local support, and operating in multiple communities |
257 | |||
| 31 |
Boa Offshoreboa.no
A long-standing family business based in Norway, specialized in providing offshore services worldwide including sea transportation, rig moves, subsea installations, and salvage operations |
249 | |||
| 32 | 209 | ||||
| 33 |
AquaGenaquagen.no
Develops and delivers genetic material for Atlantic salmon and rainbow trout to the global sea-farming industry, focusing on health, welfare, growth, and quality. |
193 | |||
| 34 |
The Geological Survey of Norwayngu.no
National institution in Norway specializing in studying bedrock, mineral resources, surficial deposits, and groundwater for research and resource management purposes |
193 | |||
| 35 | 187 | ||||
| 36 |
Maske Gruppen ASmaske.no
A leading wholesaler providing supplies to private and public sectors, with a wide range of products, competitive prices, high quality, and expertise |
182 | |||
| 37 |
BN Bank ASAbnbank.no
A Norwegian bank focused on providing simple, profitable services nationwide Owned by SpareBank1-banks, offering financing for residential and commercial projects |
176 | |||
| 38 |
Grilstad ASgrilstad.no
A leading Norwegian producer of meat products, specializing in cured meats and frozen hamburgers, with a focus on quality, tradition, and creating food joy |
175 | |||
| 39 |
Safetecsafetec.no
A leading consultancy offering risk management, environmental services, and asset performance expertise for energy, transportation, industrial assets, and public sector |
172 | |||
| 40 |
Din Salgskonsulent ASdinsalgskonsulent.no
A company specializing in distribution of insurance products in Norway, focusing on respect, engagement, and quality in providing tailored solutions to clients |
171 | |||
| 41 |
Vinde Tilkomstteknikk ASvinde-tt.no
Specialized in rope access, offering electrical, mechanical, industrial painting, NDT services, including personnel supply, project management, engineering for complete projects |
168 | |||
| 42 |
NORBIT ASAnorbit.com
Global provider of tailored technology solutions for maritime, connectivity, and R&D markets, with headquarters in Trondheim and manufacturing in Norway |
167 | |||
| 43 |
EiendomsMegler 1 Midt-Norgeeiendomsmegler1.no
A leading real estate brokerage company in Mid-Norway, providing services for the sale of residential, vacation, and commercial properties through multiple branches |
167 | |||
| 44 |
Inventasinventas.no
A design agency with multiple offices in Norway offering services in interaction, product, service, visual design, mechanics, embedded systems, robotics, and IoT |
165 | |||
| 45 |
Sabrura Sticks & Sushisabrurasushi.no
A Norwegian franchise concept offering fresh sushi and Asian sticks made from high-quality local ingredients, served in restaurants and available for takeaway |
165 | |||
| 46 | 163 | ||||
| 47 |
Dronning Mauds Minne Høgskole for barnehagelærerutdanningdmmh.no
An established foundation in Norway offering Early Childhood Education and Care programs, focusing on student and staff exchange, international cooperation, and research projects |
154 | |||
| 48 |
Jordbærpikenejordbarpikene.no
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 |
152 | |||
| 49 |
Weatherford Petroleum Consultants ASreslab.no
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 |
150 | |||
| 50 |
Big Bite Submarines ASbigbite.no
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 |
116 | |||
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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
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