Rádio Zero (also called Zero) was a non-profit webradio with an academic origin and nature, based at the Instituto Superior Técnico in Lisbon.

Its stated mission was to serve as a free access to production and broadcast of radio programs by society in general.

In his speech at the formal sitting celebrating the centenary of AEIST, Mário Lino, the Minister of Public Works, Transportation and Communication in the 17th Constitutional Government of Portugal, mentioned that he had taken part in activities of this section while a student in Instituto Superior Técnico.

In May 2002, a group of students of IST, composed by Alexandre Rio, André Duarte, André Santos, Bartolomeu Bernardes, Bernardo Mendes, David Santos,[3] Edgar Lopes, Joana Batista, João Aguiar, João Pina, Ricardo Ramires, Ricardo Ressureição and Tiago Carvalho, decided to reactivate the extinct RIIST.

Some of them ran for the administration of the student's union AEIST (cultural and creative section), whereas others were non-official supporters of the other candidates.