The 2018 California Superintendent of Public Instruction primary election was held on June 5, 2018, to elect the Superintendent of Public Instruction of California. Unlike most other elections in California, the superintendent is not elected under the state's "top-two primary". Instead, the officially nonpartisan position is elected via a nonpartisan primary election, with a runoff held on November 6, 2018, because no candidate received a majority of the vote.