This is a list of law enforcement agencies in the U.S. state of Texas. According to the US Bureau of Justice Statistics' 2008 Census of State and Local Law Enforcement Agencies, the state had 1,913 law enforcement agencies, the most of any state. These agencies employed 59,219 sworn police officers, about 244 for each 100,000 residents.

Federal agencies

There are over 150 federal law enforcement offices in Texas. including those for the Federal Bureau of Prisons, Bureau of Alcohol, Tobacco, Firearms and Explosives; Customs and Border Protection; Drug Enforcement Administration; Federal Bureau of Investigation; Immigration and Customs Enforcement; United States Secret Service; Naval Criminal Investigative Service, and U.S. Marshals. According to the Bureau of Justice Statistics, a federal law enforcement agency is "an organizational unit, or subunit, of the federal government with the principle (sic) functions of prevention, detection, and investigation of crime and the apprehension of alleged offenders."

State agencies

Military units (Texas Military Department)

Military Police (Texas Army National Guard)

Security Forces (Texas Air National Guard)

County sheriff agencies

County constable agencies

City agencies

Cross Roads Police Department

College and university agencies

Independent school district agencies (K–12)

Other agencies

Airport agencies

Charter school agencies

Hospital agencies

Park, river authority, and water district agencies

Port agencies

Railroad agencies

Transit authority agencies