The Democratic Socialist Party (Spanish: Partido Socialista Democrático) was a political party in Argentina formed in 1959 as a division of the Socialist Party.

Democratic Socialist Party Partido Socialista Democratico
Abbreviation	PSD
Leader	Américo Ghioldi (from 1959 to 1984) Alfredo Bravo (from 1988 to 2002)
Founded	1959
Dissolved	2002
Split from	Socialist Party
Succeeded by	Socialist Party
Ideology	From 1959 to 1988: Social democracy Anti-Peronism From 1988 to 2002: Social democracy Progressivism
Political position	From 1959 to 1988: Center to centre-left From 1988 to 2002: Centre-left
Colors	Red
Politics of Argentina Political parties Elections

The most important figure of the PSD was Alfredo Bravo, a teacher and civil rights activist, which was a deputy and the presidential candidate of the Socialist Party in the 2003 election.

The party joined the Popular Socialist Party in 2002 to form the Socialist Party.