Fortunato "Boy" Tanseco de la Peña (born November 12, 1949) is a Filipino engineer, professor and civil servant.
He is the Secretary of Science and Technology at the Philippines' Department of Science and Technology (DOST) under the current administration of Philippine President Rodrigo Duterte.
Before he assumed leadership of the Department, he served as President of the Philippine Association for the Advancement of Science and Technology (PhilAAST) since 2011 and had been Undersecretary of the DOST under two previous administrations.
He is also a former Chairman of the United Nations Commission on Science and Technology for Development.