These companies are the largest construction firms in Morocco, primarily based in Casablanca. They include established groups with a long history in the sector. TGCC, a Moroccan group, specializes in industrial, public, and building works. Colas Afrique focuses on transportation infrastructure, while SOGEA MAROC is a key player in hydraulic and civil engineering. Construction Management Services handles large real estate and hotel projects.
The data shows a strong concentration of these companies in Casablanca, with many of them founded between the early 1990s and early 2000s. GROUPE SONASID provides steel for construction, and BYMARO specializes in building and civil engineering projects. GTR - Les Grands Travaux Routiers is a subsidiary of Colas Group, focusing on road construction.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 | 2,603 | ||||
| 2 |
Colas Afriquecolas.com
A global leader in construction and maintenance of transportation infrastructure in Africa for over 90 years, focusing on innovation and human capital development |
1,360 | |||
| 3 |
SOGEA MAROCsogea-maroc.com
A key player in construction in Morocco, offering hydraulic, civil engineering, industrial engineering, and building services with integrated expertise and innovative solutions |
1,278 | |||
| 4 |
Construction Management Servicescmscompany.net
Specializing in turnkey delivery of large real estate and hotel projects, the company is a key player in the sector, trusted by major clients |
866 | |||
| 5 |
GTR - Les Grands Travaux Routierscolas.com
A subsidiary of Colas Group specializing in road construction projects in Morocco, known for ethical practices, safety, and environmental responsibility |
786 | |||
| 6 |
Ménara Holdingmenara-holding.ma
A diverse group with 10 companies and over 2000 employees, specializing in the construction sector and recognized for their human-centered management approach |
708 | |||
| 7 |
Jet Contractorsjet-contractors.com
Established in 1992, this Moroccan general contractor specializes in building envelope, structure, manufacturing, and general contracting for architectural projects in Morocco and Africa |
705 | |||
| 8 |
GROUPE SONASIDsonasid.ma
The company provides steel for modern living, supporting construction, transportation, energy, and sustainability, contributing to a better world |
557 | |||
| 9 |
BYMARObymaro.com
Specialized in building and civil engineering projects, this Moroccan subsidiary emphasizes recognized expertise, local impact, and sustainable development in Morocco |
541 | |||
| 10 | 450 | ||||
| 11 | 366 | ||||
| 12 |
Société ROUANDIrouandi.ma
With over 22 years of experience, the team at Construction Rénovation offers high-quality projects that meet your expectations |
317 | |||
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. | |||||
| 13 |
Amitechamitech-maroc.com
Specialized in manufacturing fiberglass-reinforced polyester pipes and accessories for water transfer, potable water, sewage, irrigation, and industrial applications Lightweight, corrosion-resistant, and leak-proof |
196 | |||
| 14 |
EL HALLAOUIelhallaoui-btp.com
The company specializes in road and infrastructure construction, urban development, building construction, producing construction materials, asphalt products, and bitumen emulsions |
167 | |||
| 15 |
GROUPE BENLHOUgroupebenlhou.com
GBF is a construction group operating in building, civil engineering, utilities, and real estate, with a focus on quality, growth, and human capital development |
162 | |||
| 16 |
Riche Boisrichebois.ma
A company specializing in construction and interior design projects, offering a comprehensive approach with highly qualified team and innovative technological solutions |
161 | |||
| 17 | 159 | ||||
| 18 |
OXYCOUPE-Jadidaoxycoupe.com
A Moroccan company specializing in metal structure construction, industrial equipment installation, maintenance, steel fabrication, piping, and mechanical engineering services for various industries |
158 | |||
| 19 |
VIAS | ڤياسvias.ma
Specializing in urban development, road construction, and airport projects, the company provides a wide range of services and high-quality bitumen-based products |
149 | |||
| 20 |
SEPARATORseparator-maroc.ma
Specializing in space design since 1999, this company offers general contracting for various construction projects, utilizing high-quality materials and modern techniques |
107 | |||
| 21 | 79 | ||||
| 22 |
Saint-Gobain Marocsaint-gobain.com
A global company that designs, produces, and distributes materials and solutions for various applications, focusing on well-being, sustainability, and innovation |
76 | |||
| 23 |
Batisphereljm.ma
A construction company specializing in building and civil engineering projects, focused on sustainability, quality, safety, client satisfaction, and competitive pricing |
67 | |||
| 24 |
Weber Marocma.weber
An international group within Saint-Gobain, Weber specializes in manufacturing industrial mortars for floor preparation, tiling, facade renovation, and technical mortars, enhancing and protecting habitats worldwide |
11 | |||
| 25 |
Groupe Qualiconsult Marocgroupe-qualiconsult.fr
Providing construction, real estate, industrial, and tertiary services throughout project development, construction, and operational phases across Morocco. |
3 | |||
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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 11, 2026.
More company lists in Morocco
- The largest companies in Morocco 653
- Multinational companies in Morocco 113
- Manufacturers in Morocco 80
- Critical infrastructure operators in Morocco 74
- Retail chains in Morocco 66
- Public sector organisations in Morocco 65
- Financial services firms in Morocco 52
- Companies with in-house R&D in Morocco 46
- Education providers in Morocco 45
- Corporate groups and holding companies in Morocco 41
- Companies with a mobile app in Morocco 39
- Higher Education companies in Morocco 38
- IT Services and IT Consulting companies in Morocco 38
- Government Administration companies in Morocco 34
- Distributors and wholesalers in Morocco 33
- Food and Beverage Manufacturing companies in Morocco 32
- IT services companies in Morocco 32
- Consumer goods companies in Morocco 31
- Hospitality companies in Morocco 29
- Publicly traded companies in Morocco 27
- Banking companies in Morocco 26
- Motor Vehicle Manufacturing companies in Morocco 26