BESIX Group is a multinational construction company based in Brussels, recognized as a leader in complex infrastructure projects. The company offers a wide range of services, including core contracting for large-scale building, marine works, and civil infrastructure. It also specializes in environmental projects such as water treatment and waste management.

BESIX Group operates globally through various subsidiaries, including Six Construct in the Middle East and Besix Watpac in Australia. The company is involved in public-private partnerships, managing projects that encompass design, finance, and maintenance. Notable projects include iconic landmarks like the Burj Khalifa and significant infrastructure developments such as ports and wastewater treatment plants. With a commitment to sustainability, BESIX Group is a member of the UN Global Compact and actively participates in climate action initiatives.