U.S. State Department list of Foreign Terrorist Organizations

"Foreign Terrorist Organization" (FTO) is a designation for non-United States-based organizations deemed by the United States Secretary of State, in accordance with section 219 of the Immigration and Nationality Act of 1965 (INA), to be involved in what US authorities define as terrorist activities. Most of the organizations on the list are Islamist extremist groups, nationalist/separatist groups or Marxist militant groups.

The Department of State, along with the Treasury Department, also has the authority to designate individuals and entities as subject to counter-terrorism sanctions according to Executive Order 13224. The Treasury's Office of Foreign Assets Control maintains a separate list of such individuals and entities.

The Office of the Coordinator for Counterterrorism (S/CT) in the US State Department continually monitors the activities of groups it does not support active around the world considered potentially "terrorist" to identify targets for designation. When reviewing potential targets, S/CT looks not only at the actual attacks that a group has carried out, but also at whether the group has engaged in planning and preparations for possible future acts of violence or retains the capability and intent to carry out such acts.

Once a target is identified, the Office of the Coordinator for Counterterrorism prepares a detailed "administrative record," which is a compilation of information, typically including both classified and open sources information, demonstrating that the statutory criteria for designation have been satisfied. If the Secretary of State, in consultation with the Attorney General and the Secretary of the Treasury, decides to make the designation, the United States Congress is notified of the Secretary's intent to designate the organization and given seven days to review the designation, as the INA requires. Upon the expiration of the seven-day waiting period, notice of the designation is published in the Federal Register, at which point the designation takes effect. An organization designated as an FTO may seek judicial review of the designation in the United States Court of Appeals for the District of Columbia Circuit not later than 30 days after the designation is published in the Federal Register.

...
Wikipedia