Tamtam Start free

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.

🇧🇪 Mons35 companiesUpdated Nov 12, 2026

The largest companies in Mons include a mix of public sector institutions and technology firms. UMONS and HELHa — Haute École 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 Paré, Mons, or government entities. This indicates a significant public sector contribution to the local economy and employment.

#CompanyIndustryHeadquarters EmployeesFounded
1
PromiSelfsafetyaction.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 🇧🇪 Mons 2,918 2015
2
UMONSweb.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 🇧🇪 Mons 1,714 2009
3
ASSISTANTonlinecareer360.com

A company based in Belgium that provides assistant services at 6 Rue de Bouzanton, Mons

Alternative Medicine 🇧🇪 Mons 1,684 n/a
4
HELHa — Haute École Louvain en Hainauthelha.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 🇧🇪 Mons 1,126 2009
5
Province de Hainauthainaut.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 🇧🇪 Mons 1,111 n/a
6
I-care Groupicareweb.com

Global leader in AI-powered predictive maintenance, offering data-driven condition monitoring solutions to reduce industrial risks and promote sustainability

Software Development 🇧🇪 Mons 862 2004
7
CHU HELORAhelora.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 🇧🇪 Mons 727 n/a
8
CHU Ambroise Paré, Monshap.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 🇧🇪 Mons 527 n/a
9
Ville de Monsmons.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 🇧🇪 Mons 376 n/a
10
BHCbhc.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 🇧🇪 Mons 354 1998
11
Faculté Polytechnique de Monsportail.umons.ac.be

Engineering education focused on civil engineering, combining scientific curiosity, mastery of sciences, and societal service with diverse career opportunities.

Research Services 🇧🇪 Mons 255 n/a
12
Multitelmultitel.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 🇧🇪 Mons 192 1999
13
réseau Abilisabilis.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 🇧🇪 Mons 160 2001
14
Monsmons.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 🇧🇪 Mons 132 n/a
15
Group Renmansrenmans.be

Specializing in butcheries with a network of 396 locations near ALDI stores, employing over 3000 staff across Belgium, Luxembourg, and France

Retail 🇧🇪 Mons 113 1980
16
Materia Novamaterianova.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 🇧🇪 Mons 101 2000
17
Groupe Omnia-Carsomnia-cars.be

A network of dealerships offering Renault, Dacia, Peugeot, Citroën, Opel, and DS vehicles, as well as a selection of used cars and auto body services

Retail 🇧🇪 Mons 68 n/a

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.

Get more companies, free
18
Acapela Groupacapela-group.com

Creation of personalized digital voices using advanced neural TTS technology for diverse applications, enabling natural, expressive voice interactions.

Software Development 🇧🇪 Mons 59 2003
19
Eonixeonix.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 🇧🇪 Mons 56 2007
20
Fishing Cactusfishingcactus.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 🇧🇪 Mons 50 2008
21
MICmic-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 🇧🇪 Mons 49 2009
22
INISMa-CRIBCbcrc.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 🇧🇪 Mons 42 n/a
23
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 🇧🇪 Mons 24 1995
24
Mielabelomielabelo.be

Operational consulting focused on enhancing organizational agility and performance through governance, information security, operational excellence, and quality management.

Business Consulting and Services 🇧🇪 Mons 23 2009
25
Actemium Alesactemium.fr

Actemium Alès, a subsidiary of Vinci Energies, offers industrial modernization services in electricity, automation, and industrial IT, specializing in various sectors

Automation Machinery Manufacturing 🇧🇪 Mons 21 n/a
26
EMPHASEemphase.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 🇧🇪 Mons 18 2002
27
BRABHOLD

Investment banking services company located in Mons, Belgium, providing financial expertise and solutions to clients for strategic decision-making and growth

Investment Banking 🇧🇪 Mons 17 n/a
28
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 🇧🇪 Mons 16 2009
29
Love International Film Festival Monsliff-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 🇧🇪 Mons 16 1984
30
IT-OPTICSxeolis.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 🇧🇪 Mons 15 2000
31
ACIC by ChapsVisionacic.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 🇧🇪 Mons 15 2003
32
iQryptoiqrypto.com

The company offers innovative quantum technology for cryptography applications, revolutionizing the industry with cutting-edge solutions

Technology, Information and Internet 🇧🇪 Mons 9 2021
33
TRIPTYKtriptyk.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 🇧🇪 Mons 6 2008
34
B-SENS - Creative Sensing Solutionsb-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 🇧🇪 Mons 5 2016
35
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 🇧🇪 Mons 3 2017

Turn this list into pipeline

Tamtam finds the decision-makers at every company on a list like this one, with verified emails, phone numbers and the buying signals that tell you when to reach out.

Build your own list, free

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 same list elsewhere