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The 27 largest companies in Loos

Tamtam tracks 27 companies headquartered in Loos. This list ranks all of them by number of employees on LinkedIn, led by Santélys, IRTS Hauts-de-France and DIAGAST. Their median headcount is 36. Half of them were founded in 1999 or later.

🇫🇷 Loos27 companiesUpdated Oct 24, 2026
#CompanyIndustryHeadquarters EmployeesFounded
1
Santélyssantelys.fr

A non-profit organization specializing in healthcare, home care, and training Providing solutions for patients with chronic illnesses and offering healthcare education and research

Home Health Care Services 🇫🇷 Loos 589 1900
2
IRTS Hauts-de-Franceirtshdf.fr

Professional training in social and medico-social fields, technical support, research, innovation, and regional coordination for social work actors.

Professional Training and Coaching 🇫🇷 Loos 491 1980
3
DIAGASTdiagast.com

A global leader in developing and providing blood group determination technologies and related services to ensure safe and accurate blood transfusions

Medical Equipment Manufacturing 🇫🇷 Loos 233 1988
4
GENFITgenfit.com

A late-stage biopharmaceutical company focused on improving the lives of patients with rare liver diseases through innovative research and development

Biotechnology Research 🇫🇷 Loos 210 1999
5
abej SOLIDARITEabej-solidarite.fr

Provide comprehensive support to homeless and excluded individuals through outreach, shelter, healthcare, housing, and economic reintegration programs in Lille.

Philanthropic Fundraising Services 🇫🇷 Loos 205 1985
6
MUTUALITE FRANCAISE AISNE-NORD-PAS DE CALAIS-SSAMfeelvie.fr

A non-profit organization facilitating access to affordable quality healthcare through a network of centers offering various healthcare services and products

Wellness and Fitness Services 🇫🇷 Loos 138 1865
7
UFR3S - Département d'Ingénierie et Management de la Santé (ILIS) - Université de Lilleufr3s.univ-lille.fr

Specializing in health, environment, and food processing, this organization provides tailored training for students to pursue diverse professions Collaboration and cultural projects enhance learning

Higher Education 🇫🇷 Loos 120 1992
8
Eurasantéeurasante.com

Support health sector actors with research, development, expert evaluations, business networking, and organization of international health-related events and projects.

Biotechnology Research 🇫🇷 Loos 107 1994
9
Kuhlmann Europekuhlmann-europe.com

Specializes in manufacturing ferric coagulants for wastewater treatment, disinfection, and resource conservation within the circular economy.

Chemical Manufacturing 🇫🇷 Loos 84 1825
10
Scemed by Winncarematernite.scemed.com

A major player in the French medical equipment market, specializing in hygiene, transfer, and disinfection solutions for healthcare facilities Innovative concepts for patient care and staff well-being

Medical Equipment Manufacturing 🇫🇷 Loos 47 n/a
11
ISEFORM Santéiseformsante.fr

Specialized institute offering healthcare education, training, and career support for professionals Located in Lille, providing diploma programs, skills development, career services, and research opportunities

Professional Training and Coaching 🇫🇷 Loos 46 n/a
12
Japet Medicaljapet.eu

A European startup combining medical technologies, textile expertise, and robotics to create motorized exoskeletons that protect employees' backs and combat musculoskeletal disorders

Medical Equipment Manufacturing 🇫🇷 Loos 39 2016
13
LATTICE MEDICALlattice-medical.com

The company specializes in tissue engineering and 3D printing to create innovative implants for soft tissue regeneration using biomaterials They have developed MATTISSE and RODIN devices

Medical Equipment Manufacturing 🇫🇷 Loos 39 2017
14
Clinaxelclinaxel.com

Innovative CRO specializing in managing clinical trials on dogs & cats for drug efficacy assessment in Oncology, Inflammation, Cardiology, and Neurology fields

Research Services 🇫🇷 Loos 36 2011
15
LUXOMEDluxomed.com

A company established in 1993, developing and manufacturing a range of medical and aesthetic devices with ISO certifications, CE marking, and made in France

Wellness and Fitness Services 🇫🇷 Loos 23 1993
16
SOPRO LA SECURITE INCENDIEsopro59.net

Specialized in fire safety for over 40 years, offering professional services including compliance, maintenance contracts, equipment verification, training, and sales and service support

Public Safety 🇫🇷 Loos 20 1978
17
Clubster NSLclubster-nsl.com

network promoting and supporting health sector companies in Nord-Pas de Calais, facilitating partnerships and investment opportunities

Civic and Social Organizations 🇫🇷 Loos 17 1995
18
X'PROCHEMxprochem.com

Biotech company specializing in proprietary ligation technology to create proteins for therapeutic, vaccine, and diagnostic applications without biological contaminants

Biotechnology Research 🇫🇷 Loos 15 2012
19
Vaxinanovaxinano.com

Specializing in innovative vaccine development for animals and humans, with a focus on non-adjuvanted vaccines using biosourced nanoparticles for improved efficacy

Biotechnology Research 🇫🇷 Loos 13 2016
20
BLUEGRioTbluegriot.fr

Designs and develops connected products, offering services from conception to pre-series production, including electronics, software, prototyping, and testing across diverse sectors.

Engineering Services 🇫🇷 Loos 9 2017
21
NoConsultingnoconsulting.fr

NoConsulting is a small IT consulting startup in Lille, focusing on camaraderie, expertise, and quality artisanal production with a dynamic and friendly atmosphere

Software Development 🇫🇷 Loos 8 2015
22
AUDITEUROPauditeurop.com

An accounting company in France providing services from their location in Loos, specializing in financial and audit services

Accounting 🇫🇷 Loos 5 n/a
23
LEXIM

Specializing in immersive experiential training through VR and MR technologies, the company enhances education and research projects in healthcare management and engineering

Education Administration Programs 🇫🇷 Loos 4 2020
24
CLINIFITclinifit.eu

CLINIFIT is an open innovation ecosystem offering global solutions for healthcare facilities, focusing on patient care, hospitalization, outpatient services, and consulting

Medical Equipment Manufacturing 🇫🇷 Loos 2 2013
25
RELAXIUMrelaxium.com

A board-certified physician specializing in neurology offers an all-natural, scientifically proven sleep aid without side effects, manufactured in the USA

Wellness and Fitness Services 🇫🇷 Loos 2 n/a
26
Manoir du Baz

A company offering a unique workspace in a manor with private and shared offices, meeting rooms, and a park, promoting creativity and collaboration

Real Estate 🇫🇷 Loos 2 2022
27
Quesnoy Redressement Logistique

Consulting services for logistics and supply chain optimization, focusing on operational efficiency, team management, and customer satisfaction improvement.

Transportation, Logistics, Supply Chain and Storage 🇫🇷 Loos 1 2025

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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 Oct 24, 2026.

The same list elsewhere in France