Engineering and Research International (ERI) is a leading consulting engineering firm based in Saudi Arabia, specializing in engineering geosciences and infrastructure development. Established in 1974, ERI has evolved from a site investigation firm into a multidisciplinary group serving both public and private sector clients throughout the Gulf region and beyond.

The company offers a wide range of services, including geotechnical, structural, water resource, environmental, and infrastructure engineering. ERI is equipped with advanced technologies such as automated distress vehicle systems, ground penetrating radar, and pavement management systems, enabling them to deliver high-quality solutions. With offices and laboratories across the Gulf, as well as affiliates in Lebanon and the United States, ERI is committed to innovation, safety, and environmental sustainability in all its projects.