# The 50 largest companies in Arnhem

Tamtam tracks 123 companies headquartered in Arnhem. This list ranks the 50 largest by number of employees on LinkedIn, led by Alliander, TenneT and HAN University of Applied Sciences. Their median headcount is 887. Half of them were founded in 1991 or later.

The largest companies in Arnhem are primarily established mid-sized to large organizations, with a strong presence in utilities, healthcare, and public administration. Alliander, for example, is a Dutch energy network company, while TenneT operates as a leading European grid operator. Rijnstate is a major hospital in the region, and Coöperatie VGZ is a non-profit health insurance provider. Provincie Gelderland and Gemeente Arnhem represent significant government administration entities.

A notable pattern among these companies is the concentration in essential services and public sector roles. Many of these organizations, such as Alliander and Liander, were founded around 2009, indicating a period of growth or restructuring in the energy sector. Other prominent companies include HAN University of Applied Sciences in higher education and Flynth in accounting and advisory services.

🇳🇱 Arnhem · 50 companies · Updated Nov 11, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Alliander](https://www.tamtam.ai/c/alliander) (alliander.com)<br>A Dutch energy network company responsible for distributing gas and electricity, promoting sustainable energy solutions, and ensuring equal access to reliable energy | Utilities | 🇳🇱 Arnhem | 9,523 | 2009 |
| 2 | [TenneT](https://www.tamtam.ai/c/tennet) (tennet.eu)<br>Leading European grid operator ensuring secure, reliable electricity supply, driving energy transition, managing over 25,000 km of high-voltage grid in Netherlands and Germany | Utilities | 🇳🇱 Arnhem | 8,058 |  |
| 3 | [HAN University of Applied Sciences](https://www.tamtam.ai/c/han-university-of-applied-sciences) (han.nl)<br>Providing quality education and research through a wide range of programs, the company focuses on academic excellence, innovation, and strong community bonds | Higher Education | 🇳🇱 Arnhem | 6,067 |  |
| 4 | [TenneT Netherlands](https://www.tamtam.ai/c/tennet-netherlands) (tennet.eu)<br>A leading European transmission system operator ensuring safe and reliable electricity supply, promoting energy transition for a sustainable future | Utilities | 🇳🇱 Arnhem | 3,583 |  |
| 5 | [Rijnstate](https://www.tamtam.ai/c/rijnstate) (rijnstate.nl)<br>A leading hospital providing high-quality healthcare and top clinical services in the Arnhem region, focusing on innovation, research, and employee development | Hospitals and Health Care | 🇳🇱 Arnhem | 3,466 |  |
| 6 | [di-rumah](https://www.tamtam.ai/c/di-rumah) (di-rumah.nl)<br>di-rumah provides small-scale, collaborative support for individuals to develop independence through residential guidance focusing on social connections, finances, household tasks, work, and psychological aid | Mental Health Care | 🇳🇱 Arnhem | 2,644 | 2013 |
| 7 | [Liander](https://www.tamtam.ai/c/liander) (liander.nl)<br>A leading net operator in the Netherlands, ensuring equal access to reliable, affordable, and sustainable energy through innovative solutions for the future | Utilities | 🇳🇱 Arnhem | 2,571 | 2009 |
| 8 | [Coöperatie VGZ](https://www.tamtam.ai/c/cooperatie-vgz) (werkenbijvgz.nl)<br>A non-profit health insurance company in the Netherlands, dedicated to providing the best healthcare at the best price for over 42 million insured individuals | Insurance | 🇳🇱 Arnhem | 2,300 |  |
| 9 | [Provincie Gelderland](https://www.tamtam.ai/c/provincie-gelderland) (gelderland.nl)<br>Regional government managing political and administrative functions for the largest Dutch province with 54 municipalities and two million residents. | Government Administration | 🇳🇱 Arnhem | 2,066 | 1850 |
| 10 | [Gemeente Arnhem](https://www.tamtam.ai/c/gemeente-arnhem) (arnhem.nl)<br>Collaborates with residents, businesses, and governments to develop Arnhem through community engagement, cultural support, and sustainable urban initiatives. | Government Administration | 🇳🇱 Arnhem | 2,038 |  |
| 11 | [Flynth](https://www.tamtam.ai/c/flynth) (flynth.nl)<br>A leading Dutch accounting and advisory service provider focused on entrepreneurs, with a unique organizational structure and passionate, team-oriented employees | Accounting | 🇳🇱 Arnhem | 1,842 |  |
| 12 | [Siza](https://www.tamtam.ai/c/siza) (siza.nl)<br>Siza provides support and care for individuals with disabilities, offering a range of services from home support to residential care, focusing on development and possibilities | Hospitals and Health Care | 🇳🇱 Arnhem | 1,637 |  |
| 13 | [Rijn IJssel](https://www.tamtam.ai/c/rijn-ijssel) (werkenbijrijnijssel.nl)<br>A vocational school in the Arnhem region offering education and training for young adults and adults to develop skills and earn diplomas | Education | 🇳🇱 Arnhem | 1,465 |  |
| 14 | [EIFFEL](https://www.tamtam.ai/c/eiffel) (eiffel.nl)<br>Specializing in tailored, results-driven solutions in Legal, Finance, and Process, with partnerships in IT and HR, bringing added value through a competitive mindset | Business Consulting and Services | 🇳🇱 Arnhem | 1,377 | 1992 |
| 15 | [CCV](https://www.tamtam.ai/c/ccv) (ccv.eu)<br>The company provides easy and accessible payment solutions for entrepreneurs and businesses of all sizes, unlocking the power of payment | Financial Services | 🇳🇱 Arnhem | 1,346 | 1958 |
| 16 | [DEKRA Nederland](https://www.tamtam.ai/c/dekra-nederland) (dekra.nl)<br>DEKRA ensures safety and sustainability through testing, inspecting, and certifying products, processes, and environments to promote trust and reliability | Public Safety | 🇳🇱 Arnhem | 1,307 |  |
| 17 | [ArtEZ University of the Arts](https://www.tamtam.ai/c/artez-university-of-the-arts) (artez.nl)<br>A diverse, international community focused on artistic, intellectual, and personal growth through inspiring art education and leading artistic research | Higher Education | 🇳🇱 Arnhem | 1,296 |  |
| 18 | [IrisZorg](https://www.tamtam.ai/c/iriszorg) (iriszorg.nl)<br>This organization provides addiction treatment, social support, housing, work opportunities, and reintegration services to individuals of all ages and backgrounds | Mental Health Care | 🇳🇱 Arnhem | 1,207 | 2007 |
| 19 | [Teijin Aramid](https://www.tamtam.ai/c/teijin-aramid) (teijinaramid.com)<br>Global leader in high-performance aramid fiber, specializing in innovative solutions for diverse industries, driving sustainability and collaboration for a better future | Chemical Manufacturing | 🇳🇱 Arnhem | 1,171 | 1983 |
| 20 | [Cito](https://www.tamtam.ai/c/cito) (cito.nl)<br>With over 50 years of experience, we develop tests and exams with a focus on equal opportunities in education, offering advice and services Contact us via phone, email, or social media | Education Administration Programs | 🇳🇱 Arnhem | 1,057 |  |
| 21 | [PreZero Nederland](https://www.tamtam.ai/c/prezero-nederland) (prezero.com)<br>Collect separated waste, sort and process into raw materials, create new products, drive innovation towards a circular economy and zero waste. | Environmental Services | 🇳🇱 Arnhem | 977 |  |
| 22 | [CRV](https://www.tamtam.ai/c/crv-arnhem) (crv4all.com)<br>CRV specializes in cattle improvement through genetic products, on-farm services, and digital information They provide solutions for farmers worldwide | Ranching | 🇳🇱 Arnhem | 971 | 1874 |
| 23 | [Qirion](https://www.tamtam.ai/c/qirion) (qirion.nl)<br>Specializing in energy grids, we design, build, and maintain high-voltage networks for clients, while also assisting in developing new networks to support the energy transition | Utilities | 🇳🇱 Arnhem | 937 |  |
| 24 | [Pactum jeugd- en opvoedhulp](https://www.tamtam.ai/c/pactum-jeugd-en-opvoedhulp) (pactum.org)<br>The company provides support to children, youth, and families in need, collaborating with local partners to offer effective and personalized assistance | Civic and Social Organizations | 🇳🇱 Arnhem | 893 |  |
| 25 | [NOC*NSF](https://www.tamtam.ai/c/noc-nsf) (nocnsf.nl)<br>The company promotes the positive impact of sports on various aspects of society such as economy, health, social cohesion, and overall well-being of the nation | Spectator Sports | 🇳🇱 Arnhem | 887 | 1912 |
| 26 | [De Onderwijsspecialisten](https://www.tamtam.ai/c/de-onderwijsspecialisten) (deonderwijsspecialisten.nl)<br>The company provides (secondary) special education and support to students in various regions, focusing on tailored assistance and collaboration with education and healthcare partners | Primary and Secondary Education | 🇳🇱 Arnhem | 884 | 2006 |
| 27 | [HSK](https://www.tamtam.ai/c/hsk) (hsk.nl)<br>HSK is a leading national organization in mental health care, focusing on assessing and treating individuals with psychological issues for recovery, work reintegration, prevention, and personal development | Mental Health Care | 🇳🇱 Arnhem | 741 | 1991 |
| 28 | [Stichting Pleyade Arnhem](https://www.tamtam.ai/c/stichting-pleyade-arnhem) (pleyade.nl)<br>Pleyade provides loving care and support to the elderly in various locations, offering different types of care and activities to ensure wellbeing | Hospitals and Health Care | 🇳🇱 Arnhem | 682 |  |
| 29 | [Veiligheids- en Gezondheidsregio Gelderland-Midden](https://www.tamtam.ai/c/veiligheids-en-gezondheidsregio-gelderland-midden) (vggm.nl)<br>Combining fire department, ambulance services, and public health services for 15 municipalities in Gelderland-Midden region, prioritizing safety and health of 680,000 residents | Public Safety | 🇳🇱 Arnhem | 649 |  |
| 30 | [Nederlands Instituut Publieke Veiligheid (NIPV)](https://www.tamtam.ai/c/nederlands-instituut-publieke-veiligheid-nipv) (nipv.nl)<br>The IFV strengthens fire services, disaster response, and crisis management for safety regions through policy support, expertise, and research | Higher Education | 🇳🇱 Arnhem | 639 |  |
| 31 | [EW Facility Services](https://www.tamtam.ai/c/ew-facility-services) (ew.nl)<br>A top five cleaning organization in the Netherlands with a strong focus on hospitality, providing high-quality multi-service solutions for a pleasant and safe environment | Facilities Services | 🇳🇱 Arnhem | 585 | 1990 |
| 32 | [Entrea Lindenhout](https://www.tamtam.ai/c/entrea-lindenhout) (entrealindenhout.nl)<br>Supporting children, young people, and families during challenging times in their growth and parenting journey | Hospitals and Health Care | 🇳🇱 Arnhem | 569 |  |
| 33 | [RIBW Arnhem & Veluwe Vallei](https://www.tamtam.ai/c/ribw-arnhem-and-veluwe-vallei) (ribwavv.nl)<br>Providing guidance and protection to socially vulnerable individuals, including those with brain damage, psychiatric illness, and addiction, to promote autonomy and self-guidance | Mental Health Care | 🇳🇱 Arnhem | 496 | 1990 |
| 34 | [Klimmendaal](https://www.tamtam.ai/c/klimmendaal) (klimmendaal.nl)<br>Specialized rehabilitation center in East Netherlands, offering medical care for children, youths, and adults to achieve independence and social integration by focusing on strengths and abilities | Hospitals and Health Care | 🇳🇱 Arnhem | 478 | 2016 |
| 35 | [Vivare](https://www.tamtam.ai/c/vivare) (vivare.nl)<br>A housing corporation providing affordable, suitable housing for individuals with limited incomes or vulnerabilities, focusing on creating a comfortable living environment in multiple municipalities | Civic and Social Organizations | 🇳🇱 Arnhem | 442 | 2001 |
| 36 | [Skar](https://www.tamtam.ai/c/skar) (skar.nl)<br>The company provides quality childcare focused on fostering children's self-confidence, curiosity, and growth in a supportive and engaging environment through various activities | Individual and Family Services | 🇳🇱 Arnhem | 442 | 1898 |
| 37 | [Jados](https://www.tamtam.ai/c/jados) (jados.nl)<br>Providing support for individuals with autism in their academic, professional, and independent living pursuits | Hospitals and Health Care | 🇳🇱 Arnhem | 441 | 2014 |
| 38 | [DrieGasthuizenGroep](https://www.tamtam.ai/c/driegasthuizengroep) (driegasthuizengroep.nl)<br>Providing professional and compassionate care for individuals with various healthcare needs, including home care, specialized elderly care, and assisted living services | Hospitals and Health Care | 🇳🇱 Arnhem | 421 | 1246 |
| 39 | [European Association of Urology](https://www.tamtam.ai/c/european-association-of-urology) (uroweb.org)<br>A non-profit organization in Europe raising the level of urological care through scientific, professional, and educational initiatives for medical professionals | Medical Practices | 🇳🇱 Arnhem | 410 | 1972 |
| 40 | [STMG - Thuiszorg](https://www.tamtam.ai/c/stmg-thuiszorg) (stmg.nl)<br>STMG is an open and transparent healthcare organization focused on providing professional care that enhances clients' autonomy and quality of life They prioritize accessibility and affordability | Hospitals and Health Care | 🇳🇱 Arnhem | 409 |  |
| 41 | [Flores Onderwijs](https://www.tamtam.ai/c/flores-onderwijs) (floresonderwijs.nl)<br>The company provides quality education to all children in Arnhem and surrounding areas, focusing on equal opportunities and fostering a community of education professionals | Primary and Secondary Education | 🇳🇱 Arnhem | 407 | 2020 |
| 42 | [Agriterra](https://www.tamtam.ai/c/agriterra) (agriterra.org)<br>Agriterra specializes in strengthening cooperatives and farmer organizations to promote sustainable economic development and prosperity in rural areas worldwide | International Trade and Development | 🇳🇱 Arnhem | 400 | 1997 |
| 43 | [Willemsen-de Koning Groep B.V.](https://www.tamtam.ai/c/willemsen-de-koning-groep-b-v) (wdkgroep.nl)<br>A leading independent transportation company in the Netherlands, providing services to public authorities, schools, and healthcare institutions with a focus on quality and safety | Transportation Programs | 🇳🇱 Arnhem | 398 |  |
| 44 | [Korian Nederland](https://www.tamtam.ai/c/korian-nederland) (korian.nl)<br>A leading organization in Europe providing innovative care, support, and well-being services for elderly individuals, focusing on enhancing their quality of life | Hospitals and Health Care | 🇳🇱 Arnhem | 383 |  |
| 45 | [Leo Kannerhuis](https://www.tamtam.ai/c/leo-kannerhuis) (youz.nl)<br>Specialist treatment center for individuals with autism and psychiatric/behavioral issues, offering personalized and online care, research, and digital tools development | Mental Health Care | 🇳🇱 Arnhem | 381 | 1974 |
| 46 | [Jeugdbescherming Gelderland](https://www.tamtam.ai/c/jeugdbescherming-gelderland) (jbgld.nl)<br>A organization in Gelderland dedicated to safeguarding children in difficult situations, working closely with families and local agencies to ensure a safe child development | Non-profit Organizations | 🇳🇱 Arnhem | 364 |  |
| 47 | [OHRA](https://www.tamtam.ai/c/ohra) (ohra.nl)<br>A Dutch insurer with over 90 years of experience, providing clear, understandable insurance and banking products to over 800,000 customers | Insurance | 🇳🇱 Arnhem | 362 | 1925 |
| 48 | [Gerechtshof Arnhem-Leeuwarden](https://www.tamtam.ai/c/gerechtshof-arnhem-leeuwarden) (rechtspraak.nl)<br>The company is the largest court in the Netherlands, with over 525 employees spread across 7 provinces, handling cases from various regions in the country They prioritize quality, modernization, and employee development | Administration of Justice | 🇳🇱 Arnhem | 348 | 2013 |
| 49 | [De Connectie](https://www.tamtam.ai/c/de-connectie) (connectie.nl)<br>De Connectie is a young organization with over 400 professionals providing business support services to Arnhem, Renkum, and Rheden municipalities in the Netherlands | Government Administration | 🇳🇱 Arnhem | 321 | 2017 |
| 50 | [Hoogwegt](https://www.tamtam.ai/c/hoogwegt) (hoogwegt.com)<br>Global supplier of dairy and plant-based products, offering quality, logistics, market intelligence, and risk management for food industry. | Dairy Product Manufacturing | 🇳🇱 Arnhem | 284 | 1965 |

## 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 Netherlands

- [The largest companies in the Netherlands](https://www.tamtam.ai/l/largest-companies-netherlands) (12,236)
- [The largest companies in North Holland](https://www.tamtam.ai/l/largest-companies-north-holland) (3,110)
- [The largest companies in South Holland](https://www.tamtam.ai/l/largest-companies-south-holland) (2,508)
- [The largest companies in North Brabant](https://www.tamtam.ai/l/largest-companies-north-brabant) (1,707)
- [The largest companies in Gelderland](https://www.tamtam.ai/l/largest-companies-gelderland) (1,100)
- [The largest companies in Overijssel](https://www.tamtam.ai/l/largest-companies-overijssel) (641)
- [The largest companies in Limburg](https://www.tamtam.ai/l/largest-companies-limburg) (498)
- [The largest companies in Groningen Province](https://www.tamtam.ai/l/largest-companies-groningen-province) (243)
- [The largest companies in Friesland](https://www.tamtam.ai/l/largest-companies-friesland) (216)
- [The largest companies in Flevoland](https://www.tamtam.ai/l/largest-companies-flevoland) (193)
- [The largest companies in Drenthe](https://www.tamtam.ai/l/largest-companies-drenthe) (167)
- [The largest companies in Zeeland](https://www.tamtam.ai/l/largest-companies-zeeland) (137)
- [The largest companies in Amsterdam](https://www.tamtam.ai/l/largest-companies-amsterdam) (1,907)
- [The largest companies in Rotterdam](https://www.tamtam.ai/l/largest-companies-rotterdam) (630)
- [The largest companies in Utrecht](https://www.tamtam.ai/l/largest-companies-utrecht) (573)
- [The largest companies in The Hague](https://www.tamtam.ai/l/largest-companies-the-hague) (429)
- [The largest companies in Eindhoven](https://www.tamtam.ai/l/largest-companies-eindhoven) (300)
- [The largest companies in 's-Hertogenbosch](https://www.tamtam.ai/l/largest-companies-s-hertogenbosch) (179)
- [The largest companies in Breda](https://www.tamtam.ai/l/largest-companies-breda) (162)
- [The largest companies in Amersfoort](https://www.tamtam.ai/l/largest-companies-amersfoort) (160)
- [The largest companies in Groningen](https://www.tamtam.ai/l/largest-companies-groningen) (155)
- [The largest companies in Tilburg](https://www.tamtam.ai/l/largest-companies-tilburg) (135)
- [The largest companies in Nijmegen](https://www.tamtam.ai/l/largest-companies-nijmegen) (120)
- [The largest companies in Haarlem](https://www.tamtam.ai/l/largest-companies-haarlem) (117)

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