United Socialist Party

United or Unified or Unitary Socialist Party may refer to:


 * Unified Socialist Party of Andalusia
 * United Socialist Party (Bolivia)
 * Unified Socialist Party (Burkina Faso)
 * Unified Socialist Party of Catalonia
 * Unified Socialist Party (France)
 * Unified Socialist Party (Germany)
 * Unified Socialist Party (Italy)
 * Unitary Socialist Party (Italy, 1922)
 * Unitary Socialist Party (Italy, 1949)
 * United Socialist Party of Korea
 * Unified Socialist Party of Mexico
 * Unified Socialist Party (Morocco)
 * Communist Party of Nepal (Unified Socialist)
 * Unified Socialist Party (Persia)
 * United Socialist Party (Romania)
 * Socialist United Party of Russia
 * Unitary Socialist Party–Socialist Agreement, San Marino
 * United Socialist Party (Sri Lanka)
 * United Socialist Party (UK)
 * United Socialist Party of Venezuela
 * United Socialist Party of Venezuela Youth