Sutan Sjahrir
The Socialist Party () was a political party in Indonesia. It was founded in December 1945 at a meeting in Cheribon, as the Socialist People's Party (Paras) of Prime Minister Sutan Sjahrir and the Socialist Party of Indonesia (Parsi) of Defence Minister Sjarifuddin merged. Sjahrir became chairman of the unified party, whilst Sjarifuddin became vice-chairman.