Residents of Khan Eshieh Camp, in Rif Dimashq, and representatives of Palestinian factions in Syria laid a wreath at the martyrs site.
Flours were offered to pay tribute to Palestinians killed in war-torn Syria.
A number of Palestinian refugees sheltered in Khan Esheih camp have been pronounced dead since anti-regime protests broke out in Syria in 2011. Several others were killed by the Israeli occupation forces in the Golan Heights border area.