The Bulgarian Socialist Party (Bulgarian: Balgarska Socialističeska Partija) (BSP) is a political party in Bulgaria. It is led by Sergei Stanishev .

In the 2001 parliamentary elections it was part of the Coalition for Bulgaria alliance which picked up 48 of 240 seats. The current Bulgarian president, Georgi Parvanov, was a member and chairman of the party. The party is the successor to the Bulgarian Communist Party and was formed in 1990 following the collapse of Communism and the party's abandonment of Marxism-Leninism. BSP is a member of the Socialist International.

List of chairmen

• Alexander Lilov (1990-1991)
• Zhan Videnov (1991-1996)
• Georgi Parvanov (1996-2001)
• Sergei Stanishev (2001 onwards)

See also: List of political parties in Bulgaria, Politics of Bulgaria.