Plínio de Arruda Sampaio, Brazilian lawyer and politician (d. 2014)
Plínio Soares de Arruda Sampaio (26 July 1930 – 8 July 2014) was a Brazilian intellectual and political activist, who was affiliated with the Partido Socialismo e Liberdade (PSOL). He ran as a candidate for the presidency of the Federative Republic of Brazil in 2010.
A graduate of University of São Paulo School of Law in the class of 1954, he was president of the Catholic University Youth and was an active member of Popular Action.
He had been a prosecutor, deputy in the 1988 Constituent Assembly and chaired the Brazilian Association for Land Reform (ABRA), an institution that fights for land reform in Brazil. He also directed the weekly newspaper Correio da Cidadania.