محمد مصدق
Prominent members are Mohammad Mosaddegh (leader of the party during 1949–1960), Allah-Yar Saleh (leader during 1960–1964), Karim Sanjabi (leader during 1967–1988), Adib Boroumand (leader during 1993–2017) and Davoud Hermidas-Bavand (current spokesperson).