Walker, Texas Ranger is an American action crime television series created by Leslie Greif and Paul Haggis. It was inspired by the film Lone Wolf McQuade, with both this series and that film starring Chuck Norris as a member of the Texas Ranger Division. The show aired on CBS in the spring of 1993, with the first season consisting of three pilot episodes. Eight full seasons followed with new episodes airing from September 25, 1993, to May 19, 2001, and reruns continuing on CBS until July 28, 2001. It has been broadcast in over 100 countries and spawned a 2005 television film entitled Trial by Fire. The film ended on a cliffhanger, which was never resolved. DVD sets of all seasons have been released (with the three pilots packaged with the first regular season). At various times since 1997, reruns of the show have aired, in syndication, on the USA Network and Action in Canada. Reruns are currently seen on CBS Action, WGN America, CMT, INSP, getTV, Pluto TV, Heroes & Icons, Grit, 10 Bold, Peacock TV, Up TV and Hulu.

The series was noted for its moralistic style. The characters refrained from the use of drugs and participated in community service. Martial arts were displayed prominently as the primary tool of law enforcement and occasionally as a tool for Walker and company to reach out to the community.

A reboot entitled Walker, starring Jared Padalecki, debuted on The CW in 2021, where it ran for four seasons.