The Legislative Assembly of Leningrad Oblast () is the regional parliament of Leningrad Oblast, a federal subject of Russia. A total of 50 deputies are elected for five-year terms.
It autonomously exercises its roles using the Constitution of the Russian Federation, federal legislation, the Charter of Leningrad Oblast, and regional laws as guides. The Legislative Assembly is a legal entity. Acts passed by it are binding on all bodies and officials of state authorities and local governments of Leningrad Oblast, organizations, and private citizens.