Ayatollah Shaykh Abdallah Mazandarani ( Persian : عبدالله مازندرانی ) (AD 1840–1912; AH 1256–1330) was a Shia Marja' and a leader of the constitutional movement against the Qajar dynasty. He was a pupil of Mirzaye Rashti. He worked alongside Akhund Khurasani and Mirza Ḥusayn Khalīlī Tihranī to support the first democratic revolution of Asia, Iran's Constitutional Revolution (1905–1911), and co-signed all major statements of the main source of emulation, Akhund Khurasani.