# The 35 largest companies in Mons
Tamtam tracks 35 companies headquartered in Mons. This list ranks all of them by number of employees on LinkedIn, led by PromiSelf, UMONS and ASSISTANT. Their median headcount is 59. Half of them were founded in 2007 or later.
The largest companies in Mons include a mix of public sector institutions and technology firms. UMONS and HELHa โ Haute รcole Louvain en Hainaut are prominent higher education providers, while Province de Hainaut and Ville de Mons are key government administration bodies. In the private sector, PromiSelf specializes in serious games development, and I-care Group is a global leader in AI-powered predictive maintenance. BHC provides IT services and ERP software, and Multitel is a private research center.
A notable characteristic of these companies is the strong presence of public and semi-public organizations. Many of the larger employers are educational institutions, hospitals like CHU HELORA and CHU Ambroise Parรฉ, Mons, or government entities. This indicates a significant public sector contribution to the local economy and employment.
๐ง๐ช Mons ยท 35 companies ยท Updated Nov 12, 2026
| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [PromiSelf](https://www.tamtam.ai/c/promiself) (safetyaction.be)
Specializing in developing interactive and visually appealing serious games in Belgium, tailored to various platforms and technologies for clients in education and retail | Software Development | ๐ง๐ช Mons | 2,918 | 2015 |
| 2 | [UMONS](https://www.tamtam.ai/c/umons) (web.umons.ac.be)
Comprehensive academic institution providing diverse undergraduate and graduate degrees in psychology, engineering, economics, architecture, and medicine including specialized adult training and international research. | Higher Education | ๐ง๐ช Mons | 1,714 | 2009 |
| 3 | [ASSISTANT](https://www.tamtam.ai/c/assistant) (onlinecareer360.com)
A company based in Belgium that provides assistant services at 6 Rue de Bouzanton, Mons | Alternative Medicine | ๐ง๐ช Mons | 1,684 | |
| 4 | [HELHa โ Haute รcole Louvain en Hainaut](https://www.tamtam.ai/c/helha-haute-ecole-louvain-en-hainaut) (helha.be)
This organization offers bachelor's, master's, and specialization programs in 7 domains of study including agriculture, applied arts, economics, education, health, science, and social sciences | Higher Education | ๐ง๐ช Mons | 1,126 | 2009 |
| 5 | [Province de Hainaut](https://www.tamtam.ai/c/province-de-hainaut) (hainaut.be)
The organization provides a wide range of daily services including schools, medical-social centers, libraries, laboratories, and support for farmers in various locations | Government Administration | ๐ง๐ช Mons | 1,111 | |
| 6 | [I-care Group](https://www.tamtam.ai/c/i-care-group) (icareweb.com)
Global leader in AI-powered predictive maintenance, offering data-driven condition monitoring solutions to reduce industrial risks and promote sustainability | Software Development | ๐ง๐ช Mons | 862 | 2004 |
| 7 | [CHU HELORA](https://www.tamtam.ai/c/chu-helora) (helora.be)
Operating as a large hospital group across 7 sites in Wallonia, providing evolving, high-quality, and safe patient care through university approach and medical investments. | Hospitals and Health Care | ๐ง๐ช Mons | 727 | |
| 8 | [CHU Ambroise Parรฉ, Mons](https://www.tamtam.ai/c/chu-ambroise-pare-mons) (hap.be)
A leading public hospital offering a wide range of general and specialized healthcare services, with over 400 beds and 320,000 annual consultations | Hospitals and Health Care | ๐ง๐ช Mons | 527 | |
| 9 | [Ville de Mons](https://www.tamtam.ai/c/ville-de-mons) (mons.be)
A public service in Mons, Hainaut, promoting respect, solidarity, and collaboration among its 2,000 employees to provide quality services to citizens | Government Administration | ๐ง๐ช Mons | 376 | |
| 10 | [BHC](https://www.tamtam.ai/c/bhc) (bhc.be)
An IT services provider based in Mons, specializing in end-to-end solutions, ERP software, customized software, and Open Source technologies like Odoo (OpenERP) | IT Services and IT Consulting | ๐ง๐ช Mons | 354 | 1998 |
| 11 | [Facultรฉ Polytechnique de Mons](https://www.tamtam.ai/c/faculte-polytechnique-de-mons) (portail.umons.ac.be)
Engineering education focused on civil engineering, combining scientific curiosity, mastery of sciences, and societal service with diverse career opportunities. | Research Services | ๐ง๐ช Mons | 255 | |
| 12 | [Multitel](https://www.tamtam.ai/c/multitel) (multitel.be)
A private research center specializing in applied research and development for industry leaders, SMEs, and spin-off companies in various technological fields | Research Services | ๐ง๐ช Mons | 192 | 1999 |
| 13 | [rรฉseau Abilis](https://www.tamtam.ai/c/reseau-abilis) (abilis.be)
A network of residences in Belgium and France providing support for individuals with mental disabilities, focusing on autonomy, teamwork, and personal growth | Mental Health Care | ๐ง๐ช Mons | 160 | 2001 |
| 14 | [Mons](https://www.tamtam.ai/c/mons) (mons.be)
The company is located in Mons, Belgium, known for its rich history and cultural heritage It serves as a cultural hub and has been designated as the European Capital of Culture | Government Administration | ๐ง๐ช Mons | 132 | |
| 15 | [Group Renmans](https://www.tamtam.ai/c/group-renmans) (renmans.be)
Specializing in butcheries with a network of 396 locations near ALDI stores, employing over 3000 staff across Belgium, Luxembourg, and France | Retail | ๐ง๐ช Mons | 113 | 1980 |
| 16 | [Materia Nova](https://www.tamtam.ai/c/materia-nova) (materianova.be)
Develops sustainable materials and industrial processes through surface treatments, plasma technologies, and biopolymers while providing eco-design evaluations and technology scaling for industrial applications. | Research Services | ๐ง๐ช Mons | 101 | 2000 |
| 17 | [Groupe Omnia-Cars](https://www.tamtam.ai/c/groupe-omnia-cars) (omnia-cars.be)
A network of dealerships offering Renault, Dacia, Peugeot, Citroรซn, Opel, and DS vehicles, as well as a selection of used cars and auto body services | Retail | ๐ง๐ช Mons | 68 | |
| 18 | [Acapela Group](https://www.tamtam.ai/c/acapela-group) (acapela-group.com)
Creation of personalized digital voices using advanced neural TTS technology for diverse applications, enabling natural, expressive voice interactions. | Software Development | ๐ง๐ช Mons | 59 | 2003 |
| 19 | [Eonix](https://www.tamtam.ai/c/eonix) (eonix.be)
Leading developer of custom applications for sensitive data in healthcare, education, justice, and businesses Offers secure solutions, expert consultants, and dedicated IT support | IT Services and IT Consulting | ๐ง๐ช Mons | 56 | 2007 |
| 20 | [Fishing Cactus](https://www.tamtam.ai/c/fishing-cactus) (fishingcactus.com)
A video game development studio in Belgium, creating original and innovative games for various platforms with a focus on high quality and smart art choices | Entertainment Providers | ๐ง๐ช Mons | 50 | 2008 |
| 21 | [MIC](https://www.tamtam.ai/c/mic) (mic-belgique.be)
Accelerator supporting startups and tech-focused companies through learning, innovation, and entrepreneurship initiatives, in partnership with public and private sector players | IT Services and IT Consulting | ๐ง๐ช Mons | 49 | 2009 |
| 22 | [INISMa-CRIBC](https://www.tamtam.ai/c/inisma-cribc) (bcrc.be)
Technical support and research center specializing in ceramics and inorganic materials for construction, healthcare, and high-temperature industries through analysis and development. | Think Tanks | ๐ง๐ช Mons | 42 | |
| 23 | [D-Tek s.a.](https://www.tamtam.ai/c/d-tek-s-a) (d-tek.be)
A Belgian company specializing in developing and producing diagnostic kits for auto immune diseases, including ELISA and IMMUNODOT kits, along with related products | Biotechnology Research | ๐ง๐ช Mons | 24 | 1995 |
| 24 | [Mielabelo](https://www.tamtam.ai/c/mielabelo) (mielabelo.be)
Operational consulting focused on enhancing organizational agility and performance through governance, information security, operational excellence, and quality management. | Business Consulting and Services | ๐ง๐ช Mons | 23 | 2009 |
| 25 | [Actemium Ales](https://www.tamtam.ai/c/actemium-ales) (actemium.fr)
Actemium Alรจs, a subsidiary of Vinci Energies, offers industrial modernization services in electricity, automation, and industrial IT, specializing in various sectors | Automation Machinery Manufacturing | ๐ง๐ช Mons | 21 | |
| 26 | [EMPHASE](https://www.tamtam.ai/c/emphase) (emphase.be)
Tech startup specializing in Fiber Optic Sensing Technologies, offering disruptive Thermal Sensing Technology, Data Management Solutions, and sensor ecosystem implementation for various industries | Internet Publishing | ๐ง๐ช Mons | 18 | 2002 |
| 27 | [BRABHOLD](https://www.tamtam.ai/c/brabhold)
Investment banking services company located in Mons, Belgium, providing financial expertise and solutions to clients for strategic decision-making and growth | Investment Banking | ๐ง๐ช Mons | 17 | |
| 28 | [BALIO STUDIOยฎ๏ธ](https://www.tamtam.ai/c/balio-studio) (baliostudio.com)
Development studio creating high-quality video games for consoles and mobiles, producing titles for PC, Nintendo, PlayStation, and Xbox platforms. | Computer Games | ๐ง๐ช Mons | 16 | 2009 |
| 29 | [Love International Film Festival Mons](https://www.tamtam.ai/c/love-international-film-festival-mons) (liff-mons.be)
An international film festival celebrating the universal theme of love through a diverse program of unreleased films, fostering cultural exchange and cinematic enjoyment | Movies, Videos, and Sound | ๐ง๐ช Mons | 16 | 1984 |
| 30 | [IT-OPTICS](https://www.tamtam.ai/c/it-optics) (xeolis.com)
IT-OPTICS is an IT services company specializing in open source software, with a focus on infrastructure optimization and logistics solutions | IT Services and IT Consulting | ๐ง๐ช Mons | 15 | 2000 |
| 31 | [ACIC by ChapsVision](https://www.tamtam.ai/c/acic-by-chapsvision) (acic.eu)
Customizing software and hardware video analysis solutions for surveillance, road traffic monitoring, and people counting, with a focus on intelligent videosurveillance for security and safety | Software Development | ๐ง๐ช Mons | 15 | 2003 |
| 32 | [iQrypto](https://www.tamtam.ai/c/iqrypto) (iqrypto.com)
The company offers innovative quantum technology for cryptography applications, revolutionizing the industry with cutting-edge solutions | Technology, Information and Internet | ๐ง๐ช Mons | 9 | 2021 |
| 33 | [TRIPTYK](https://www.tamtam.ai/c/triptyk) (triptyk.eu)
Custom digital solutions for users and businesses Specializing in websites, e-commerce, IoT, ERP/CRM integration, internal applications, training, and consultancy services since 2008 | Technology, Information and Internet | ๐ง๐ช Mons | 6 | 2008 |
| 34 | [B-SENS - Creative Sensing Solutions](https://www.tamtam.ai/c/b-sens-creative-sensing-solutions) (b-sens.be)
A Belgian company specializing in developing OEM sensors based on fiber Bragg gratings for temperature, strain, vibration, and environmental monitoring, with custom smart objects | Industrial Machinery Manufacturing | ๐ง๐ช Mons | 5 | 2016 |
| 35 | [NEURON ACADEMY INTERNATIONAL S.A.](https://www.tamtam.ai/c/neuron-academy-international-s-a) (reflex-on.com)
A fast-growing Belgian company specializing in cognitive training to enhance cognitive functions and brain plasticity through evidence-based solutions | Wellness and Fitness Services | ๐ง๐ช Mons | 3 | 2017 |
## 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.
## The same list elsewhere in Belgium
- [The largest companies in Belgium](https://www.tamtam.ai/l/largest-companies-belgium) (6,987)
- [The largest companies in Flanders](https://www.tamtam.ai/l/largest-companies-flanders) (4,222)
- [The largest companies in Wallonia](https://www.tamtam.ai/l/largest-companies-wallonia) (1,106)
- [The largest companies in Brussels](https://www.tamtam.ai/l/largest-companies-brussels) (1,033)
- [The largest companies in Antwerp](https://www.tamtam.ai/l/largest-companies-antwerp) (616)
- [The largest companies in Ghent](https://www.tamtam.ai/l/largest-companies-ghent) (352)
- [The largest companies in Mechelen](https://www.tamtam.ai/l/largest-companies-mechelen) (127)
- [The largest companies in Leuven](https://www.tamtam.ai/l/largest-companies-leuven) (115)
- [The largest companies in Hasselt](https://www.tamtam.ai/l/largest-companies-hasselt) (112)
- [The largest companies in Liรจge](https://www.tamtam.ai/l/largest-companies-liege) (107)
- [The largest companies in Zaventem](https://www.tamtam.ai/l/largest-companies-zaventem) (106)
- [The largest companies in Kontich](https://www.tamtam.ai/l/largest-companies-kontich) (99)
- [The largest companies in Bruges](https://www.tamtam.ai/l/largest-companies-bruges) (91)
- [The largest companies in Kortrijk](https://www.tamtam.ai/l/largest-companies-kortrijk) (77)
- [The largest companies in Genk](https://www.tamtam.ai/l/largest-companies-genk) (68)
- [The largest companies in Roeselare](https://www.tamtam.ai/l/largest-companies-roeselare) (56)
- [The largest companies in Namur](https://www.tamtam.ai/l/largest-companies-namur) (47)
- [The largest companies in Turnhout](https://www.tamtam.ai/l/largest-companies-turnhout) (45)
- [The largest companies in Waregem](https://www.tamtam.ai/l/largest-companies-waregem) (44)
- [The largest companies in Charleroi](https://www.tamtam.ai/l/largest-companies-charleroi) (43)
- [The largest companies in Vilvoorde](https://www.tamtam.ai/l/largest-companies-vilvoorde) (43)
- [The largest companies in Wavre](https://www.tamtam.ai/l/largest-companies-wavre) (43)
- [The largest companies in Nivelles](https://www.tamtam.ai/l/largest-companies-nivelles) (41)
- [The largest companies in Herentals](https://www.tamtam.ai/l/largest-companies-herentals) (32)
## The same list elsewhere
- [The largest companies in the world](https://www.tamtam.ai/l/largest-companies-in-the-world) (415,122)
- [The largest companies in Europe](https://www.tamtam.ai/l/largest-companies-in-europe) (213,553)
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Source: https://www.tamtam.ai/l/largest-companies-mons