Fortunato "Boy" Tanseco de la Peña (born November 12, 1949) is a Filipino engineer and professor who served as the Secretary of Science and Technology in the Cabinet of President Rodrigo Duterte from 2016 to 2022. Before he assumed leadership of the Department of Science and Technology (DOST), he was the Undersecretary for Science and Technology Services from 2001 to 2014. Except for his brief retirement from 2014 to 2016, he has been with the department since 1982.