António Poppe Lopes Cardoso (27 March 1933 – 8 June 2000) was a Portuguese politician.
[1] He studied at the High Institute of Agronomy (Instituto Superior de Agronomia), he is an opponent of Salazarism and was stripped from associative functions.
He disliked the new agrarian rules of the Socialist Party, he was demoted, he became an independent deputy.
[2] He founded the Worker's Brotherhood, a movement that would lead to a new party, the UEDS (Left Union of Socialist Democracy).
He was an author of different books and articles on the reality of Portuguese agriculture and its political party system.