The Libertarian Party (LIBER; Brazilian Portuguese: Partido Libertários) is a libertarian Brazilian political organization listed as a political party by the Superior Electoral Court (Portuguese: Tribunal Superior Eleitoral; TSE).

[1] The concept of the Brazilian Libertarian Party first surfaced in 2005 among users of the Orkut social networking service.

Because of its strong defense of a market economy with minimal state interference, the party has been associated with the new right.

It supports free-market policies and is ideologically informed by Austrian-British writer and philosopher Friedrich Hayek and Austrian-American economist and historian Ludwig von Mises.

[10] In an interview with Instituto Pais Melhor, the former president of LIBER Bernardo Santoro defined libertarianism as "a political philosophy based on individual sovereignty, non-initiation of aggression, and self-ownership."