California's 23rd senatorial district is one of 40 California State Senate districts. It is currently represented by of .
For and after the 2024 California State Senate election, the district will encompass the high desert communities of the Antelope Valley and Victor Valley, as well as the Santa Clarita Valley in Los Angeles County. The district has a very large Latino population.
Due to redistricting, the 23rd district has been moved around different parts of the state. The current iteration resulted from the 2021 redistricting by the California Citizens Redistricting Commission.