Zahra Khanoum Tadj es-Saltaneh (1883-25 January 1936) was a Persian princess and memoirist of the Qajar Dynasty, a daughter of Nasser al-Din Shah by his wife Turan es-Saltaneh. She was one of the defenders of the Iranian Constitutional Revolution and a prominent member of the Anjoman Horriyyat Nsevan (The Society of Women's Freedom).