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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.

🇳🇴 Trondheim50 companiesUpdated Nov 11, 2026

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.

#CompanyIndustryHeadquarters EmployeesFounded
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

Higher Education 🇳🇴 Trondheim 9,737 1910
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

Government Administration 🇳🇴 Trondheim 4,875 1000
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

Hospitals and Health Care 🇳🇴 Trondheim 3,884 1902
4
SINTEFsintef.no

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 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

Semiconductor Manufacturing 🇳🇴 Trondheim 1,410 1983
6
HENT AShent.no

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 SMNsparebank1.no

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 n/a
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

IT Services and IT Consulting 🇳🇴 Trondheim 912 2004
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

Retail 🇳🇴 Trondheim 631 1981
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

Government Administration 🇳🇴 Trondheim 618 2013
11
Signicatsignicat.com

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-Freeq-free.com

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 n/a
13
Torghattentorghatten.no

A Norway-based company offering various products or services

Maritime Transportation 🇳🇴 Trondheim 522 1878
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

Government Administration 🇳🇴 Trondheim 493 1892
15
Hemit HFhemit.no

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 ASautronicafire.com

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
UKAuka.no

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 ASAokea.no

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 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

Accounting 🇳🇴 Trondheim 404 1985
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

Research Services 🇳🇴 Trondheim 368 1988
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

Government Administration 🇳🇴 Trondheim 368 2022
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

Higher Education 🇳🇴 Trondheim 362 n/a
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

Civic and Social Organizations 🇳🇴 Trondheim 333 1948
24
SINTEF Oceansintef.no

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
Egonegon.no

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

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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

Technology, Information and Media 🇳🇴 Trondheim 322 2019
27
ScaleAQscaleaq.com

Global provider of aquaculture equipment, technology, and solutions Committed to sustainable growth, innovation, and leadership in the industry worldwide

Maritime Transportation 🇳🇴 Trondheim 315 n/a
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

Research Services 🇳🇴 Trondheim 284 1951
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

Retail 🇳🇴 Trondheim 268 1958
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

Retail 🇳🇴 Trondheim 257 1878
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

Maritime Transportation 🇳🇴 Trondheim 249 1975
32
FARA ASfara.no

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
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.

Biotechnology Research 🇳🇴 Trondheim 193 1985
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

Government Administration 🇳🇴 Trondheim 193 1858
35
Kionakiona.com

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 n/a
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

Wholesale 🇳🇴 Trondheim 182 1858
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

Banking 🇳🇴 Trondheim 176 1961
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

Manufacturing 🇳🇴 Trondheim 175 1957
39
Safetecsafetec.no

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 ASdinsalgskonsulent.no

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 ASvinde-tt.no

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 ASAnorbit.com

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-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

Real Estate 🇳🇴 Trondheim 167 n/a
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

Design Services 🇳🇴 Trondheim 165 1997
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

Restaurants 🇳🇴 Trondheim 165 2012
46
Sticos ASsticos.no

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 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

Higher Education 🇳🇴 Trondheim 154 1947
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

Restaurants 🇳🇴 Trondheim 152 2003
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

Oil and Gas 🇳🇴 Trondheim 150 n/a
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

Food and Beverage Services 🇳🇴 Trondheim 116 1997

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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