Tarso Fernando Herz Genro (born 6 March 1947) is a Brazilian politician from the southern state of Rio Grande do Sul.

An associate of Luiz Inácio Lula da Silva, Genro was a leader of the Workers' Party (PT) in the 2000s.

[citation needed] As a member of the Workers' Party (PT), he was elected deputy mayor of Porto Alegre by the "Popular Front".

When Italian far-left terrorist Cesare Battisti of the Armed Proletarians for Communism, wanted for four murders, was arrested in Rio de Janeiro in March 2007 by Brazilian and French police officers, Genro granted him status as a political refugee.

[5] His daughter, Luciana Genro, is a socialist politician in Brazil who served as the presidential candidate of the Socialism and Liberty Party (PSOL) in 2014.