California's 45th congressional district is a congressional district in the U.S. state of California currently represented by Republican Michelle Steel. It was one of 18 districts that would have voted for Joe Biden in the 2020 presidential election had they existed in their current configuration while being won or held by a Republican in 2022.

Michelle Eunjoo Steel is an American politician serving as the U.S. representative for California's 45th congressional district since 2023, previously representing the 48th congressional district from 2021 to 2023. A member of the Republican Party, she concurrently served as a member of House Minority Whip Steve Scalise's Whip Team for the 117th Congress.