The governor of California is the head of government of the U.S. state of California. The governor is the commander-in-chief of the California National Guard and the California State Guard.

Established in the Constitution of California, the governor's responsibilities also include submitting the budget, ensuring that state laws are enforced, and making the annual State of the State address to the California State Legislature. The position was created in 1849, the year before California became a state.

The governor is now limited to two terms, regardless of whether they are consecutive. The current governor of California is Democrat Gavin Newsom, who was inaugurated on January 7, 2019. Jerry Brown was the longest serving governor in California history, serving from 1975 until 1983, and again from 2011 until 2019.

According to Article 5 of the State Constitution it lists out the Powers & Responsibilities of Office of Governor of California

A candidate for governor must be a U.S. citizen and a registered voter within the state, must not have been convicted of a felony involving bribery, embezzlement, or extortion, and must not have served two terms since November 6, 1990.

Governors are elected by popular ballot and serve terms of four years, with a limit of two terms, if served after November 6, 1990. Governors take the following oath:

I (Governor) do solemnly swear that I will support and defend the Constitution of the United States and the Constitution of the State of California against all enemies foreign and domestic, that I will bear true faith and allegiance to the Constitution of the United States and the Constitution of the State of California, that I take this obligation freely without any mental reservation or purpose of evasion and that I will well and faithfully discharge the duties upon which I am about to enter.

Governors take office on the first Monday after January 1 after their election.