The 30 largest foundations in South Holland (2026 list)

These foundations in South Holland are primarily active in education, non-profit work, and social services. Many are based in The Hague, with others in Rotterdam, Leiden, and Delft. They range from large organizations like SMK, which develops certification criteria for sustainable business practices, to mid-sized foundations such as Lucas Onderwijs, focused on primary and secondary education, and the IKEA Foundation, which combats poverty and climate change through grants. ICTU supports government services with IT solutions, while TBI is involved in engineering and construction.

A notable pattern is the strong presence of educational foundations, including De Haagse Scholen and Stanislascollege, which manage numerous schools and offer diverse learning concepts. Another significant cluster is in non-profit and social support, with organizations like Leger des Heils Rijnmond Zuidwest providing mental health care and KNCV TB Plus working to eliminate tuberculosis globally. The concentration of these organizations in The Hague suggests a hub for public service and international cooperation.

#	Company	Industry	Headquarters	Employees	Founded
1	SMK smk.nl The company develops and manages certification criteria for sustainable business practices, involving various stakeholders to ensure reliability and transparency in environmental certifications	Renewables & Environment	🇳🇱 The Hague / Den Haag	5,654	1992
2	Lucas Onderwijs lucasonderwijs.nl Lucas Onderwijs is a foundation for primary and secondary education, operating schools in various municipalities with a focus on quality, diversity, and community partnerships	Primary and Secondary Education	🇳🇱 The Hague	774	n/a
3	TBI tbi.nl A leading player in engineering, construction, and infrastructure, with a focus on delivering innovative and sustainable solutions, investing in social initiatives for a better future	Construction	🇳🇱 Rotterdam	719	1982
4	De Haagse Scholen dehaagsescholen.nl A foundation in The Hague managing 51 diverse public schools, offering various educational concepts to meet individual learning needs and preparing students for the future	Primary and Secondary Education	🇳🇱 The Hague	682	n/a
5	IKEA Foundation ikeafoundation.org Strategic philanthropy focused on combating poverty and climate change through grants to improve family livelihoods and protect the planet	Non-profit Organizations	🇳🇱 Leiden	551	1982
6	ICTU ictu.nl ICTU helps governments improve their services through innovative, high-quality ICT solutions, supporting collaboration between government levels and achieving concrete results for citizens and businesses	IT Services and IT Consulting	🇳🇱 The Hague	544	2001
7	SCOH Onderwijs en Opvang scoh.nl A educational foundation in The Hague area with 32 primary schools, 5 specialized schools, and 21 preschools, focusing on children's development from toddler to adolescent	Primary and Secondary Education	🇳🇱 The Hague	430	n/a
8	Leger des Heils Rijnmond Zuidwest legerdesheils.nl The organization provides professional and personal fulfilling work in nursing, social services, and advocacy with a focus on individual care and development opportunities	Mental Health Care	🇳🇱 Rotterdam	407	1865
9	Stanislascollege stanislascollege.nl A diverse school community offering education from practical to gymnasium levels, rooted in Catholic tradition or interconfessional identity, emphasizing Ignatian Pedagogy	Primary and Secondary Education	🇳🇱 Delft	406	1948
10	Stichting Anton Constandse antonconstandse.nl The organization supports people with serious mental health conditions to live as normally as possible through protective housing and home support, offering unique recovery assistance	Mental Health Care	🇳🇱 The Hague	372	1988
11	KNCV TB Plus tuberculose.nl A Dutch NGO working to eliminate tuberculosis through evidence generation, technical assistance, policy development, and advocacy at national and global levels	Non-profit Organizations	🇳🇱 The Hague	369	1903
12	Nuffic nuffic.nl Organization promoting internationalization in education by providing expertise, services, and knowledge worldwide to ensure all students have global opportunities for success	Education Administration Programs	🇳🇱 The Hague	353	1952
13	SARO - Samen Ambitieus Rotterdams Onderwijs wijzijnsaro.nl SARO provides diverse education levels and concepts for children and youth in Rotterdam, fostering growth, learning, and equal opportunities	Primary and Secondary Education	🇳🇱 Rotterdam	346	2024
14	Hartstichting hartstichting.nl Aiming to improve heart health in the Netherlands, this organization raises awareness and funds to prevent heart and vascular diseases Visit hartstichtingnl for more information	Non-profit Organizations	🇳🇱 The Hague	338	1964
15	European Climate Foundation europeanclimate.org Support over 700 partners advancing Paris Agreement goals, promoting practical climate policies, and broadening political and public climate action support.	Philanthropic Fundraising Services	🇳🇱 The Hague	337	2008
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16	Laurentius Stichting laurentiusstichting.nl The company operates 27 primary schools, 1 secondary special education school, 1 International school, and various daycare centers in the Netherlands	Primary and Secondary Education	🇳🇱 Delft	312	1997
17	Mooi Sociaal mooisociaal.nl An independent foundation coordinating youth teams in South Holland, promoting empowerment and providing support within families' own environment	Non-profit Organizations	🇳🇱 Dordrecht	307	2014
18	Young Lady Business Academy ylba.nl Empowering young ambitious women in the Netherlands to increase self-confidence, awareness, and pursue leadership roles in public and private sectors	Professional Training and Coaching	🇳🇱 Rotterdam	261	2017
19	Woord en Daad woordendaad.nl A Dutch Christian foundation fighting poverty worldwide, connecting with partners to create sustainable transformation and bring about a world without suffering	Non-profit Organizations	🇳🇱 Gorinchem	183	1973
20	STO talent4kidz.nl The foundation focuses on developing youth talent in various areas, emphasizing quality, fun, reliability, and individual attention to help children grow and learn	Civic and Social Organizations	🇳🇱 The Hague	104	n/a
21	Museum Voorlinden voorlinden.nl A private collection of modern and contemporary art is housed at a museum, showcasing diverse works from Dutch and international artists	Museums, Historical Sites, and Zoos	🇳🇱 Wassenaar	85	2011
22	LAM museum lammuseum.nl A unique museum with an international art collection focused on food & consumption, offering a different perspective on everyday objects with Kijkcoaches	Museums, Historical Sites, and Zoos	🇳🇱 Lisse	30	2008
23	SWK \| Garantie- en waarborgregelingen in de bouw swk.nl SWK provides warranty certificates for homebuyers, protecting them from risks associated with purchasing new homes, ensuring quality and security	Insurance	🇳🇱 Rotterdam	29	1978
24	Japanmuseum SieboldHuis sieboldhuis.org This company runs a museum in the Netherlands showcasing a unique collection of Japanese objects and artefacts, supported by various institutions	Museums, Historical Sites, and Zoos	🇳🇱 Leiden	21	2005
25	Lonneke van Leth Dans lonnekevanleth.nl Lonneke van Leth Dans produces dance performances for theaters and locations, making dance appealing to a wide audience since 2002	Entertainment Providers	🇳🇱 The Hague	13	n/a
26	WoWijs wowijs.nl WoWijs offers a successful multidisciplinary lifestyle intervention program for children, focusing on healthy eating and exercise through a digital e-learning app	Professional Training and Coaching	🇳🇱 The Hague	6	2013
27	Stichting Nedlloyd Pensioenfonds (geliquideerd)nedlloyd.com This company manages the pension obligations of various shipping companies that merged into Nedlloyd, changing names several times over the years	Financial Services	🇳🇱 Rotterdam	5	1971
28	Stichting Rotterdam Events koninginnedag.com SRE is a non-profit organization in Rotterdam organizing events such as Koninginnedag and the successful Sint Nicolaas intocht, with a rotating board of 5 students	Entertainment Providers	🇳🇱 Rotterdam	4	1992
29	Groundstation.Space groundstation.space A not-for-profit foundation driving Space Data Technology innovation through education, exploration, and collaboration to push the boundaries of possibilities	Defense and Space Manufacturing	🇳🇱 Noordwijk	3	2017
30	Stibat stichting-open.org A non-profit organization facilitating battery lifecycle management, aiming for maximum recycling and safe processing to support a circular economy	Environmental Services	🇳🇱 Zoetermeer	3	1995

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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 30 largest foundations in South Holland

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