Social Democratic Party (Brazil, 2011)

Social Democratic Party
Partido Social Democrático
AbbreviationPSD
PresidentGilberto Kassab
FounderGilberto Kassab
Founded21 March 2011 (2011-03-21)
Split fromDemocrats (mainly)
PSDB (minority)
NewspaperDiálogos no Espaço Democrático
Think tankEspaço Democrático
Youth wingPSD Jovem
Women's wingPSD Mulher
Membership411,608
IdeologyBig tent
Economic liberalism
Political positionCentre to centre-right
International affiliationCentrist Democrat International
Colours    Blue, green,
and yellow
TSE Identification Number55
Chamber of Deputies
47 / 513
Federal Senate
13 / 81
City Councillors
5,694 / 56,810
Website
psd.org.br

The Social Democratic Party (Portuguese: Partido Social Democrático, PSD) is a political party in Brazil led by Gilberto Kassab and uniting dissidents from various political parties, especially the Democrats, Brazilian Social Democracy Party and Party of National Mobilization.

The party has become a major force for centrism in Brazil and commonly unites with both left-wing and right-wing parties. In this way, the party managed to have members occupying positions in ministries and important secretariats in the governments of presidents Dilma Rousseff, Michel Temer, and Luiz Inácio Lula da Silva. As such, PSD has been considered by political scientists as a big tent party and part of the Centrão. While one of the youngest parties in Brazil, PSD's pragmatic nature has allowed it to grow exponentially, becoming one of the largest parties in Brazil.

After the 2024 Brazilian municipal elections, it has become the party with the most number of mayors in Brazil.