The All Tripura Tiger Force (ATTF) is an isolationist group from the Tripura region of India. It was founded on July 11, 1990, by a group of former Tripura National Volunteer members under the leadership of Ranjit Debbarma. The ATTF is currently considered a terrorist organisation by India. The rebellion, in which it is involved is the Tripura Rebellion. According to the South Asian Terrorism Portal, approximately 90% of the ATTF's administration are Hindu and the rest are Muslims.