A Comprehensive List of Federal Law Enforcement Agencies in the United States

Within the sprawling federal government of the United States, there are numerous agencies responsible for law enforcement. These agencies often operate with distinct jurisdictions and mandates, serving a diverse range of roles from investigating crimes to protecting vital national security interests. This article provides an exhaustive list of these federal law enforcement agencies, detailing their functions and operational capacities.

Executive Branch

The executive branch is home to a variety of federal agencies with law enforcement capabilities. Each agency serves a specific function and often operates exclusively within the bounds of its specific department or bureau.

Department of Agriculture

Office of the Secretary of Agriculture - Protective Operations Division (POD) USDA-OIG (Office of Inspector General) USDA Forest Service - Law Enforcement and Investigations (USFS LEI) USFS LEI

Department of Commerce

DOC-OIG (Office of Inspector General) DOC OSUS (Office of Security, Commerce Department Police) DOC BIS (Bureau of Industry and Security) DOC OEE (Office of Export Enforcement) NIST (National Institute of Standards and Technology) NIST Police (if applicable) NMFS (National Oceanic and Atmospheric Administration) NMFS OLE (Office for Law Enforcement)

Department of Defense

DOD-OIG (Office of Inspector General) DCIS (Defense Criminal Investigative Service) DOD PFPA (Defense Force Protection Agency) DOD USPPD (United States Pentagon Police) DOD DLA (Defense Logistics Agency) DOD DLA Police (if applicable) DOD NSA (National Security Agency) DOD NSA Police (if applicable) DOD DIA (Defense Intelligence Agency) DOD DIA Police (if applicable) DOD NGA (National Geospatial-Intelligence Agency) DOD NGA Police (if applicable) DOD SIGAR (Special Inspector General for Afghanistan Reconstruction) DOD CID (Army Criminal Investigation Command) DOD CID (Army Military Police Corps) DOD ACI (Army Civilian Police) DOD USMC CID (Marine Corps Criminal Investigation Division) DOD USMC MMP (Marine Corps Provost Marshals) DOD USMC Civilian Police (if applicable) DOD USAF (Air Force) DOD USAF AFOSI (Air Force Office of Special Investigations) DOD USAF AFSFC (Air Force Security Forces Center) DOD USAF Security Forces (if applicable) DOD USAF USAF DCP (Air Force Civilian Police) DOD DOD DOL (Department of Labor) DOD DOL OIG (Office of Inspector General) DOD DOL OSHSS (Office of Health, Safety and Security)

Other Departments and Independent Agencies

DOE-OIG (Department of Energy) DOE-HSS (Department of Health and Human Services) HHS FDA (Food and Drug Administration) HHS-OIG (Office of Inspector General) NIH (National Institutes of Health) NIH Police (if applicable) HHS ICE (Customs and Border Protection) HHS ICE CBP (United States Customs and Border Patrol) HHS ICE CBP USBP (United States Border Patrol) HHS DHS (Department of Homeland Security) HHS DHS DHS FLETC (Federal Law Enforcement Training Centers) HHS DHS DHS FPS (Federal Protective Service) HHS DHS DHS USCG (United States Coast Guard) HHS DHS CGIS (Coast Guard Investigative Service) HHS DHS DHS CBP (United States Customs and Border Protection) HHS DHS DHS CBP AMO (Air and Marine Operations) HHS DHS DHS CBP OFO (Office of Field Operations) HHS DHS FEMA (Federal Emergency Management Agency) HHS DHS FEMA MWE (Mount Weather Emergency Operations Center) HHS DHS FEMA MWE Police (if applicable) HHS DHS DHS ICE (Immigration and Customs Enforcement) HHS DHS DHS HSI (Homeland Security Investigations) HHS DHS DHS ERO (Enforcement Removal Operation) HHS DHS DHS SIGAR (Special Inspector General for Afghanistan Reconstruction) HHS DHS SIGIR (Special Inspector General for Iraq Reconstruction) State Department DOS OS (Office of Security) DOS DS (Office of Security) DOS DSS (Diplomatic Security Service) Transportation Department DOT-DHS (Department of Transportation) DOT OAHSSE (Office of Highways Safety and Security) DOT-TSA (Transportation Security Administration, Office of Law Enforcement) DOT-TSA FAMS (Federal Air Marshal Service) DOT-TSA OI (Office of Inspection) Office of Special Programs at the Department of Education ED-OIG (Office of Inspector General) ED-OCR (Office for Civil Rights) Department of Justice DOJ-OIG (Office of Inspector General) ATF (Bureau of Alcohol, Tobacco, Firearms and Explosives) DEA (Drug Enforcement Administration) FBI (Federal Bureau of Investigation, FBI Police) BOP (Federal Bureau of Prisons) USMS (United States Marshals Service) DOJ OPR (Office of Professional Responsibility) Other Departments and Independent Agencies TVA (Tennessee Valley Authority) TVA OIG (Office of Inspector General) TVA TVAP (Tennessee Valley Authority Police) DOE-EPA (Environmental Protection Agency) DOE-EPA-OIG (Office of Inspector General) NASA (National Aeronautics and Space Administration) NASA OIG (Office of Inspector General) NASA NASA OPS (Office of Protective Services) OPM (Office of Personnel Management) OPM OIG (Office of Inspector General) TRICARE (Department of Defense) United States Secret Service (USSS, USSS UD - Uniformed Division) SSA (Social Security Administration) SSA OIG (Office of Inspector General)

Each of these agencies, whether part of a department or an independent entity, plays a crucial role in maintaining the safety and security of the United States. From guarding national treasures to protecting the lives of citizens, these federal law enforcement agencies ensure that the country is safe and secure under a watchful eye.