Tennessee Highway Patrol
- Responsible for enforcing federal and state laws relating to traffic, investigating accidents, and criminal interdiction on roads and highways. Organization structure, memorial pages, and other news and information.
- http://www.state.tn.us/safety/thp.htm

Tennessee Meth Offender Registry
- Searchable database lists persons convicted of manufacture of methamphetamine since March 30, 2005.
- http://www.tennesseeanytime.org/methor/

Federal Bureau of Investigation - Memphis Field Office
- Serves West Tennessee and part of Middle Tennessee. Includes information about investigative and community outreach programs, and photos of the area's missing persons and most wanted fugitives.
- http://memphis.fbi.gov/

Federal Bureau of Investigation - Knoxville Office
- Serves the eastern part of the state and southern Middle Tennessee. Includes history of the Knoxville Office, including some past cases, and information about current fugitives.
- http://knoxville.fbi.gov/

Tennessee Bureau of Investigation
- State crime investigation agency. Jurisdiction includes narcotics violations, fugitive investigations, organized crime, public corruption, official misconduct, Medicaid/TennCare fraud a
- http://www.tbi.state.tn.us/

Internet Crime Information Center
- Tennessee sexual offender registry, missing children information, and registry of persons who have been placed on probation or parole in another state but reside in Tennessee.
- http://www.ticic.state.tn.us/