Announcing his resignation on Monday at his office in Ikeja, Adediran said he was leaving the party owing to what he called betrayal by party elders.
He said the inability of the state chapter of the party to resolve its internal crisis also prompted his decision to leave.
Adediran, leader of the Lagos4Lagos Movement, added that he was leaving PDP with all his supporters in all the 20 local government areas and 37 local council development areas (LCDAs) in the state.