The 2019 Tour of California was a road cycling stage race that took place between 12 and 18 May 2019 in the United States. It was the 14th edition of the Tour of California and the 24th race of the 2019 UCI World Tour.

The Tour of California was an annual professional road cycling stage race on the UCI World Tour and USA Cycling Professional Tour that ran from 2006 to 2019. It was the only event on the top-level World Tour in the United States. The eight-day race covered 650–700 miles (1,045–1,126 km) through the U.S. state of California.