Dragnet – later syndicated as Badge 714 – is an American crime television series, based on the radio series of the same name, both created by their star, Jack Webb. The shows take their name from the police term dragnet, a system of coordinated measures for apprehending criminals or suspects. Webb reprised his radio role of Los Angeles police detective Sergeant Joe Friday. Ben Alexander co-starred as Friday's partner, Officer Frank Smith.

The ominous, four-note introduction to the brass and tympani theme music (titled "Danger Ahead"), composed by Walter Schumann, is instantly recognizable. It is derived from Miklós Rózsa's score for the 1946 film The Killers.

This was the first television series in a Dragnet media franchise encompassing film, television, books and comics. The series was filmed at Walt Disney Studios in Burbank, California.