# 28 leading public sector organisations in Gelderland

Tamtam tracks 28 public sector organisations headquartered in Gelderland. This list ranks all of them by number of employees on LinkedIn, led by Radboudumc, Alliander and Wageningen University & Research. Their median headcount is 639. Half of them were founded in 2004 or later. The most common headquarters are Arnhem (9), Nijmegen (6) and Apeldoorn (3).

The public sector in Gelderland consists of large organisations providing essential services. Radboudumc is an academic center for medical science, education, and patient care. Alliander is an energy network company distributing gas and electricity. Wageningen University & Research focuses on healthy food and living environments, while TenneT is a European grid operator ensuring electricity supply. Radboud University is a public university known for its research focus.

Most of these organisations are headquartered in a few key cities: Arnhem, Nijmegen, and Apeldoorn. Arnhem hosts Alliander, TenneT, and HAN University of Applied Sciences. Nijmegen is home to Radboudumc, Radboud University, and Veiligheidsregio Gelderland-Zuid. Apeldoorn houses Kadaster, Politieacademie, and Veiligheidsregio Noord- en Oost-Gelderland. This indicates a concentration of public sector activity in these urban centers.

🇳🇱 Gelderland · 28 companies · Updated Nov 12, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Radboudumc](https://www.tamtam.ai/c/radboudumc) (radboudumc.nl)<br>Leading academic center for medical science, education, and patient care; connecting research, education, and patient care for future healthcare and medical science. | Hospitals and Health Care | 🇳🇱 Nijmegen | 9,995 | 1956 |
| 2 | [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 |
| 3 | [Wageningen University & Research](https://www.tamtam.ai/c/wageningen-university-and-research) (wur.nl)<br>Education and research focused on healthy food and living environments, combining natural and social sciences for practical scientific breakthroughs. | Research Services | 🇳🇱 Wageningen | 9,227 | 1918 |
| 4 | [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 |  |
| 5 | [Radboud University](https://www.tamtam.ai/c/radboud-university) (ru.nl)<br>A public university in Nijmegen, Netherlands known for its research focus, established in 1923, offering seven faculties and serving over 19,130 students | Research Services | 🇳🇱 Nijmegen | 7,525 | 1923 |
| 6 | [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 |  |
| 7 | [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 |  |
| 8 | [Kadaster](https://www.tamtam.ai/c/kadaster) (kadaster.nl)<br>The company is responsible for registering all real estate in the Netherlands and provides data to advise policymakers and assist with international land registry projects | Government Administration | 🇳🇱 Apeldoorn | 2,252 |  |
| 9 | [Politieacademie](https://www.tamtam.ai/c/politieacademie) (politieacademie.nl)<br>The company focuses on training, research, and knowledge development for police officers, working with students, practitioners, and international partners to build a strong future for law enforcement | Public Safety | 🇳🇱 Apeldoorn | 2,126 |  |
| 10 | [Gemeente Ede](https://www.tamtam.ai/c/gemeente-ede) (ede.nl)<br>Municipality focused on green spaces, healthy living, knowledge development, and active community life through sustainable urban and regional planning. | Government Administration | 🇳🇱 Ede | 1,241 | 1216 |
| 11 | [Waterschap Rivierenland](https://www.tamtam.ai/c/waterschap-rivierenland) (waterschaprivierenland.nl)<br>A water partner focusing on clean and sufficient surface water, safe dikes, and addressing climate change challenges for a sustainable river area | Government Administration | 🇳🇱 Tiel | 952 |  |
| 12 | [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 |  |
| 13 | [Veiligheidsregio Noord- en Oost-Gelderland](https://www.tamtam.ai/c/veiligheidsregio-noord-en-oost-gelderland) (vnog.nl)<br>Working with 22 municipalities, this organization ensures a safe and healthy society through fire services, accident assistance, disaster management, and prevention in a large region | Public Safety | 🇳🇱 Apeldoorn | 645 | 2004 |
| 14 | [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 |  |
| 15 | [Veiligheidsregio Gelderland-Zuid](https://www.tamtam.ai/c/veiligheidsregio-gelderland-zuid) (vrgz.nl)<br>The company works with emergency services, municipalities, and volunteers to prevent, control, and mitigate disasters and crises in Gelderland-Zuid | Non-profit Organizations | 🇳🇱 Nijmegen | 628 | 2010 |
| 16 | [Donders Institute for Brain, Cognition, and Behaviour](https://www.tamtam.ai/c/donders-institute-for-brain-cognition-and-behaviour) (paa.ge)<br>Research on brain mechanisms underlying cognition and behavior, integrating genetics, molecular biology, neuroscience, and behavioral analysis to improve health and technology. | Research Services | 🇳🇱 Nijmegen | 596 |  |
| 17 | [Waterschap Rijn en IJssel](https://www.tamtam.ai/c/waterschap-rijn-en-ijssel) (wrij.nl)<br>Managing water levels, purifying sewage, and ensuring clean water in rivers and streams in Oost-Gelderland, southern Overijssel, and southeastern Veluwe for safe living and recreation | Government Administration | 🇳🇱 Doetinchem | 560 | 1997 |
| 18 | [GGD Gelderland-Zuid](https://www.tamtam.ai/c/ggd-gelderland-zuid) (ggdgelderlandzuid.nl)<br>The company in Gelderland-Zuid region of the Netherlands focuses on public health, disease prevention, emergency response, and promoting collaboration with health partners | Hospitals and Health Care | 🇳🇱 Nijmegen | 500 | 2013 |
| 19 | [Werkorganisatie Druten Wijchen](https://www.tamtam.ai/c/werkorganisatie-druten-wijchen) (werkorganisatiedrutenwijchen.nl)<br>The municipal governments of Druten and Wijchen have merged their administrative operations under the Work Organization Druten Wijchen, maintaining separate local services | Government Relations Services | 🇳🇱 Wijchen | 359 | 2018 |
| 20 | [GGD Noord- en Oost-Gelderland](https://www.tamtam.ai/c/ggd-noord-en-oost-gelderland) (ggdnog.nl)<br>The company provides public health services for 22 municipalities, focusing on the health of over 800,000 residents through crisis response and prevention initiatives | Hospitals and Health Care | 🇳🇱 Warnsveld | 358 |  |
| 21 | [Werkzaak Rivierenland](https://www.tamtam.ai/c/werkzaak-rivierenland) (werkzaakrivierenland.nl)<br>Werkzaak Rivierenland assists job seekers, advises employers on subsidies and inclusive technology, matches candidates to job openings, and offers outsourcing services | Government Administration | 🇳🇱 Tiel | 349 | 2015 |
| 22 | [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 |
| 23 | [Wageningen Food Safety Research](https://www.tamtam.ai/c/wageningen-food-safety-research) (wur.nl)<br>Specialized in food safety research, this institute advises governments, conducts independent analysis, and serves as a reference laboratory for various substances | Research Services | 🇳🇱 Wageningen | 326 | 1975 |
| 24 | [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 |
| 25 | [NIOO-KNAW](https://www.tamtam.ai/c/nioo-knaw) (nioo.knaw.nl)<br>A team of 200+ people conduct basic and strategic ecological research, studying genes to ecosystems, in a sustainable research building with eco-technology | Research Services | 🇳🇱 Wageningen | 262 |  |
| 26 | [Scalabor](https://www.tamtam.ai/c/scalabor) (scalabor.nl)<br>Scalabor is a social development company in Midden-Gelderland, supporting individuals with work integration through training, employment connections, and financial stability | Civic and Social Organizations | 🇳🇱 Arnhem | 244 | 2018 |
| 27 | [Avri](https://www.tamtam.ai/c/avri) (avri.nl)<br>The company focuses on sustainable waste collection and resource management, public space maintenance, and promoting a circular economy in the Rivierenland region | Waste Collection | 🇳🇱 Geldermalsen | 188 | 1989 |
| 28 | [Dar NV](https://www.tamtam.ai/c/dar-nv) (dar.nl)<br>The company works towards creating a fresh and green living environment by recycling waste, maintaining green spaces, and promoting social employment | Environmental Services | 🇳🇱 Nijmegen | 125 | 2000 |

## 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 12, 2026.

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Source: https://www.tamtam.ai/l/public-sector-organisations-gelderland