The Social Democratic Party of Bosnia and Herzegovina - Socialdemocrats (Socijaldemokratska Partija BiH - Socijaldemokrati / Социјалдемократска Партија БиХ - Социјалдемократи), is a political party in Bosnia and Herzegovina.

The party is a successor of the Communist party of Bosnia and Herzegovina, and was enlarged by the inclusion of the Socijaldemokrati BiH party to the original SDP.

The current president of the party is Zlatko Lagumdžija, former Bosnian foreign minister.