The companies listed here are primarily large-scale organizations, many of which are well-established, operating in diverse sectors such as retail, financial services, and healthcare. Notable examples include IKEA, a global home furnishing retailer; NN Group, providing retirement and insurance services; KPN, a telecommunications provider; and Erasmus MC, a leading university medical center.
There is a concentration of headquarters in Rotterdam and The Hague, suggesting these cities are key business hubs within South Holland. The industries represented range from consumer retail and electronics, with companies like Coolblue and MediaMarkt, to essential services such as healthcare and telecommunications.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 | 101,757 | ||||
| 2 |
NN Groupnn-group.com
Provides retirement services, pensions, insurance, banking, and investments to approximately 18 million customers across 10 countries, including Europe and Japan. |
24,125 | |||
| 3 | 17,917 | ||||
| 4 |
Erasmus MCerasmusmc.nl
Leading university medical center providing advanced healthcare, cutting-edge research, and high-quality education focused on complex and rare medical conditions. |
14,228 | |||
| 5 |
Coolbluecoolblue.nl
An online retail company in the Netherlands & Belgium focused on customer satisfaction, offering free shipping, quick responses on social media, and innovative service |
3,828 | |||
| 6 | 3,698 | ||||
| 7 |
HagaZiekenhuishagaziekenhuis.nl
A leading top clinical teaching hospital in the Haaglanden region, offering excellent basic care, specialized services, and supporting scientific research |
3,244 | |||
| 8 |
Dirk van den Broekdirk.nl
A family-owned discount supermarket chain with over 125 stores in multiple regions, known for its self-service model since 1942 |
3,164 | |||
| 9 |
MediaMarkt Beneluxmediamarkt.nl
Leading consumer electronics retailer in Europe, offering integrated online and in-store shopping experiences with diverse brands and services. |
2,439 | |||
| 10 |
Odido Nederlandodido.nl
Odido is a telecom provider focused on making technology accessible, inclusive, and sustainable, offering mobile, fiber, and TV services with a human touch |
2,360 | |||
| 11 |
MediaMarkt Nederlandmediamarkt.nl
A leading omnichannel player in consumer electronics in the Netherlands, focusing on creating the best customer experience online and offline |
2,190 | |||
| 12 |
Het Nederlandse Rode Kruisrodekruis.nl
The organization provides aid to people in need with a large network of volunteers, responding to disasters and emergencies worldwide |
1,967 | |||
| 13 | 1,935 | ||||
| 14 |
Zorgwerkzorgwerk.nl
Specializing in staffing solutions for the healthcare sector, providing excellent service to match supply and demand, with a focus on values like happiness and connectedness |
1,806 | |||
| 15 |
Babysitsbabysits.org
An online community marketplace connecting parents and babysitters for safe, easy, and affordable childcare services worldwide since 2008 |
1,634 | |||
| 16 |
Dienst Toeslagenovertoeslagen.nl
A public service provider under the Ministry of Finance, helping make vital services affordable and providing recognition and restoration for those affected by benefits |
1,617 | |||
| 17 |
Zilveren Kruiszilverenkruis.nl
providing affordable, high-quality healthcare access and advising employers on promoting healthy, productive work environments to reduce costs |
1,598 | |||
| 18 |
IJsselland Ziekenhuisysl.nl
An general regional hospital in Capelle aan den IJssel with a focus on gastrointestinal care, serving the surrounding area since 1991 |
1,379 | |||
| 19 |
HTM Personenvervoer N.V.htm.nl
A transportation company in the Hague region providing buses, trams, and group transport, serving over 130 million passengers annually for over 150 years |
1,301 | |||
| 20 | 1,236 | ||||
| 21 |
International NGO Safety Organisation (INSO)ngosafety.org
A dedicated NGO providing free safety services to humanitarian organizations, including incident tracking, crisis management support, staff training, and risk management assistance |
1,097 | |||
| 22 | 924 | ||||
| 23 |
Greenchoicegreenchoice.nl
Greenchoice provides 100% green energy and offset gas, encourages energy conservation and self-generation, and offers sustainable energy from sun, wind, water, and biomass |
753 | |||
| 24 |
Naturalis Biodiversity Centernaturalis.nl
The company is dedicated to recording all life on Earth, researching nature to preserve biodiversity, and contributing to solutions for global issues |
690 | |||
| 25 |
Sunweb Groupsunwebgroup.com
Online travel agency offering personalized holiday packages across Europe, specializing in flights, accommodations, and local services for diverse travelers. |
679 | |||
Want more companies than this list?This page shows the largest ones only. Connect to Tamtam to see every company that matches, filter by size, industry or growth, and reach their decision-makers. | |||||
| 26 |
DSW Zorgverzekeraarwerkenbijdsw.nl
Providing accessible, affordable, and high-quality health insurance with strong customer relationships and self-developed digital service platforms. |
670 | |||
| 27 | 656 | ||||
| 28 |
Veiligheidsregio Haaglandenvrh.nl
The company is one of the twenty-five safety regions in the Netherlands, focusing on increasing safety and preparedness for incidents through collaboration with various organizations |
642 | |||
| 29 |
Het Van Weel-Bethesda Ziekenhuisvanweelbethesda.nl
A basis hospital with a specialized approach, referring patients to partners for advanced treatments, while providing a predominantly Protestant-Christian care environment |
593 | |||
| 30 |
Zorg en Zekerheidzorgenzekerheid.nl
We are a regional health insurance provider with nearly 200 years of experience, prioritizing personalized care and involvement in local communities Visit our website for more information |
579 | |||
| 31 |
Nederlandse Loterijnederlandseloterij.nl
Contribute to a happier, healthier, and more active Netherlands by providing responsible gambling options and supporting sports and charities |
562 | |||
| 32 |
AD.nlmyprivacy.dpgmedia.nl
AD NewsMedia BV is a publisher of a major national newspaper and news website, providing international, national, regional, and local news content |
513 | |||
| 33 |
Aegon Nederlandasr.nl
Empowering individuals through life's milestones with pension, mortgage, and insurance products and services, now part of asr for expanded offerings Hiring customer-focused professionals |
439 | |||
| 34 |
Jeans Centrejeanscentre.nl
A multibrand retail organization in the Netherlands with 100 stores, specializing in jeans for men, women, boys, and girls from various A-brands |
374 | |||
| 35 |
Wittebrugwittebrug.nl
Representing renowned car brands, providing new and used vehicles, leasing, and automotive services across the Hague, Delft, Leiden, and Rotterdam regions |
364 | |||
| 36 |
Gemeente Maassluismaassluis.nl
The company is based in Maassluis, a historic city known for its fishing heritage, modern amenities, cultural diversity, and vibrant community |
353 | |||
| 37 |
UN1EK Onderwijs en Opvangun1ek.nl
UN1EK offers integrated education and childcare services for children from 0 to 13 years old in Vlaardingen, Maassluis, and Schiedam |
350 | |||
| 38 |
Staffyoustaffyou.nl
A Rotterdam-based company founded in 2016, revolutionizing flexible working by connecting people with employers for fair and flexible work opportunities |
347 | |||
| 39 |
HappyNursehappynurse.nl
The company provides professional care with loving attention, aiming to be the preferred choice for healthcare organizations, patients, and employees |
339 | |||
| 40 | 324 | ||||
| 41 |
Rexel Nederland B.V.rexel.nl
A leading partner for electrical professionals, part of a global distribution group specializing in electrical materials |
318 | |||
| 42 |
Consumentenbondconsumentenbond.nl
The company collaborates with consumers to ensure fair, just, and safe markets, providing expert advice and services, advocating for consumer rights |
287 | |||
| 43 |
Toolstation NLtoolstation.nl
A rapidly growing supplier of tools, accessories, and building products for professionals and DIY enthusiasts, focused on providing a wide range of products and promoting personal development for employees |
253 | |||
| 44 |
Schindler Liften BV (Netherlands)schindler.nl
A leading provider of mobility solutions, offering quality installations, maintenance, and modernization of elevators, escalators, and moving walkways for various projects in the Netherlands |
228 | |||
| 45 |
Bibliotheek Den Haagbibliotheekdenhaag.nl
A source of inspiration for the city, providing creative ideas and solutions for urban development and community growth |
225 | |||
| 46 |
Unilever Food Solutions Nederlandunileverfoodsolutions.nl
A company supporting chefs with inspiration, new ideas, and trends for creative and nutritious meal options, while prioritizing efficiency and sustainability |
196 | |||
| 47 |
Koninklijke PostNL B.V.postnl.nl
International shipping company, now operating as FedEx in the US Offering efficient and reliable delivery services with expanded capabilities |
186 | |||
| 48 |
MyLife Nederlandmylife.nl
MyLife is a welcoming fitness community in the Netherlands, offering support for individuals of all ages to live healthier, balanced lives |
158 | |||
| 49 |
Van den Ban Autobanden B.V.vandenban.nl
An international tyre distributor with a complete assortment of 30+ brands, logistic services, customized IT solutions, and 24/7 webshop ordering |
142 | |||
| 50 |
Eneco eMobility Nederlandeneco-emobility.com
Eneco eMobility is a growing charging service provider in the Netherlands, Belgium, and Luxembourg, offering installation, maintenance, and Europe-wide charging solutions |
136 | |||
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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 13, 2026.
More company lists in South Holland
- The largest companies in South Holland 2,508
- Multinational companies in South Holland 559
- Transportation, Logistics, Supply Chain and Storage companies in South Holland 276
- Logistics companies in South Holland 263
- Retail chains in South Holland 188
- Critical infrastructure operators in South Holland 152
- Truck Transportation companies in South Holland 145
- Professional services firms in South Holland 145
- Software Development companies in South Holland 142
- Companies with in-house R&D in South Holland 140
- SaaS companies in South Holland 137
- Manufacturers in South Holland 134
- Family-owned companies in South Holland 128
- Healthcare providers in South Holland 124
- IT Services and IT Consulting companies in South Holland 121
- Financial services firms in South Holland 120
- Education providers in South Holland 111
- Hospitals and Health Care companies in South Holland 109
- Financial Services companies in South Holland 107
- Consulting firms in South Holland 106
- Distributors and wholesalers in South Holland 96
- IT services companies in South Holland 93
- Hardware manufacturers in South Holland 86
- Hotel and hospitality groups in South Holland 86
The same list elsewhere in Netherlands
- Companies with a mobile app in the Netherlands 411
- Companies with a mobile app in North Holland 160
- Companies with a mobile app in North Brabant 40
- Companies with a mobile app in Gelderland 27
- Companies with a mobile app in Amsterdam 106
- Companies with a mobile app in Rotterdam 26
- Companies with a mobile app in Utrecht 26