الحزب الشيوعي اللبناني
Many prominent leftist leaders and activists in Lebanon were affiliated to ULDY during their early political life including Anwar Yassin and Souha Bechara, two former resistors and detainees in Israel, Saadallah Mazraani the Vice General-Secretary of the Lebanese Communist Party and Hanna Gharib the former President of Union of High School Teachers in Lebanon.