Cadiz is a city in Trigg County, Kentucky, United States. The population was 2,373 at the 2000 census. It is the county seat of Trigg County. It is an old town located close to the Land Between the Lakes, a popular recreation area, and was a base of Union and Confederate operations in the American Civil War.
Cadiz is part of the Clarksville, TN–KY Metropolitan Statistical Area, and is located in a wet county as of September 2009.
In William Henry Perrin's 1884 History of Trigg County, he does not say why or how Cadiz got its name. He does say that in May 1820 when Trigg became a county, a commission was established to choose a county seat. This commission selected Robert Baker's land as the Seat of Justice. Robert Baker relinquished his stable yard and 50 acres (200,000 m2) surrounding it.