Spain

Top 9 largest Spanish Companies in the Engineering & Construction industry by Market Cap

This is the list of the largest public listed companies in the Engineering & Construction industry from Spain by market capitalization with links to their reference stock.

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Top Engineering & Construction Companies from Spain as of Jan. 01, 2026

Rank Company Market Cap (USD) Country Sector Industry
1 ACS, Actividades de Construcción y Servicios, SA $25.72 B Spain Spanish Industrials Spanish Engineering & Construction
2 Acciona, SA $12.21 B Spain Spanish Industrials Spanish Engineering & Construction
3 Sacyr, SA $3.65 B Spain Spanish Industrials Spanish Engineering & Construction
4 Técnicas Reunidas, SA $2.50 B Spain Spanish Industrials Spanish Engineering & Construction
5 Obrascón Huarte Lain, SA $599.1 M Spain Spanish Industrials Spanish Engineering & Construction
6 Grupo Empresarial San José, SA $581.7 M Spain Spanish Industrials Spanish Engineering & Construction
7 Airtificial Intelligence Structures, SA $163.4 M Spain Spanish Industrials Spanish Engineering & Construction
8 Clerhp Estructuras SA $97.9 M Spain Spanish Industrials Spanish Engineering & Construction
9 Duro Felguera, SA $43.0 M Spain Spanish Industrials Spanish Engineering & Construction

Top Engineering & Construction Companies from Spain as of Jan. 01, 2026

1. ACS, Actividades de Construcción y Servicios, SA

Company Profile: ACS, Actividades de Construcción y Servicios, SA
Market Cap (USD): $25.72 B
Country: Spain
Sector: Spanish Industrials
Industry: Spanish Engineering & Construction

2. Acciona, SA

Company Profile: Acciona, SA
Market Cap (USD): $12.21 B
Country: Spain
Sector: Spanish Industrials
Industry: Spanish Engineering & Construction

3. Sacyr, SA

Company Profile: Sacyr, SA
Market Cap (USD): $3.65 B
Country: Spain
Sector: Spanish Industrials
Industry: Spanish Engineering & Construction

4. Técnicas Reunidas, SA

Company Profile: Técnicas Reunidas, SA
Market Cap (USD): $2.50 B
Country: Spain
Sector: Spanish Industrials
Industry: Spanish Engineering & Construction

5. Obrascón Huarte Lain, SA

Company Profile: Obrascón Huarte Lain, SA
Market Cap (USD): $599.1 M
Country: Spain
Sector: Spanish Industrials
Industry: Spanish Engineering & Construction

6. Grupo Empresarial San José, SA

Company Profile: Grupo Empresarial San José, SA
Market Cap (USD): $581.7 M
Country: Spain
Sector: Spanish Industrials
Industry: Spanish Engineering & Construction

7. Airtificial Intelligence Structures, SA

Company Profile: Airtificial Intelligence Structures, SA
Market Cap (USD): $163.4 M
Country: Spain
Sector: Spanish Industrials
Industry: Spanish Engineering & Construction

8. Clerhp Estructuras SA

Company Profile: Clerhp Estructuras SA
Market Cap (USD): $97.9 M
Country: Spain
Sector: Spanish Industrials
Industry: Spanish Engineering & Construction

9. Duro Felguera, SA

Company Profile: Duro Felguera, SA
Market Cap (USD): $43.0 M
Country: Spain
Sector: Spanish Industrials
Industry: Spanish Engineering & Construction

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