Member countries are represented and participate in CYTED through their corresponding Signatory Organizations. These entities, which are the National Science and Technology (ONCYT) of the signatory countries, make up the collegiate bodies of CYTED. In the case of Spain, the Spanish Agency for International Cooperation for Development (AECID) also participates as Signatory Agency.
The designation of an institution as a Signatory Agency in CYTED is determined by the Government of each member country.
2012.- Alberto Majó Piñeyrúa
2003 – 2012 .- Fernando Aldana Mayor
1998 – 2003.- José Antonio Cordero
1997 – 1998.- Horacio Díaz del Barco
1989 – 1996.- Jesús Sebastián Audina
1986 – 1989.- Manuel Casero Nuño
1984 – 1986.- Eduardo Lechuga Jiménez