Fedayi may refer to:
Armenian fedayi, Armenian civilians who formed self-defense units and armed bands in reaction to the mass murder of Armenians in late 19th and early 20th centuries Fedayeen (Arabic for "those who sacrifice themselves"), a term used to refer to various military groups
See also FIDA (disambiguation) Fida'i, the national anthem of Palestine Order of Assassins, a religious sect of Shia Ismailis, also known as Fida’is Fidai Khan, Mughal governor of Bengal under emperor Jehangir Fidai Khan Koka, Mughal governor in India under emperor Aurangzeb