California's 19th senatorial district is one of 40 California State Senate districts. It is currently represented by of .
The district encompasses large parts of California's desert regions, including the High Desert, the outermost fringes of the Inland Empire and parts of the San Jacinto Valley and the Coachella Valley. Major cities include Apple Valley, Yucaipa, Hemet, and Palm Springs.
Due to redistricting, the 19th district has been moved around different parts of the state. The current iteration resulted from the 2021 redistricting by the California Citizens Redistricting Commission.