Santiago J. Castellà Surribas (Barcelona, 1967) is president of the Port Authority of Tarragona since October 31, 2024.

Castellà holds a degree in Law from the University of Barcelona, a degree in Political Science from the National University of Distance Education, a postgraduate degree in European and International Studies, a master's degree in Security, Peace and Defense from the General Gutiérrez Mellado University Institute, and a doctorate in International Law from the University of Barcelona. For 25 years he has been a professor in the Department of Public Law at the Universitat Rovira i Virgili (URV).