José Antonio Castro was a Californio politician, statesman, and general who served as interim Governor of Alta California and later Governor of Baja California. During the Bear Flag Revolt and the American Conquest of California, Castro led Mexican forces as the Commandante General of Northern California.

The governor of Baja California represents the executive branch of the government of the state of Baja California, Mexico, per the state's constitution. The official title is "Free and Sovereign State of Baja California", and the position is democratically elected for a period of 6 years, and is not re-electable. From 1953 to 2019, the governor's term began November 1 of the year of the election and finishes October 31, six years later. To coincide with the federal elections, the law was changed, decreeing there would be an election in 2019, another in 2021, and yet another in 2024 before reverting to a six-year term.