Parti Socialiste (Socialist Party) may refer to:
Parti Socialiste (Belgium) Parti Socialiste (France) Parti Socialiste (Mauritius) (PS), see List of political parties in Mauritius Parti Socialiste Mauricien (PSM), see List of political parties in Mauritius Parti Socialiste du Sénégal, Senegal Parti Socialiste Suisse, Switzerland Partie Socialiste (Tunisia)
See also List of socialist parties