California's 10th senatorial district is one of 40 California State Senate districts.

It is currently represented by Democrat Aisha Wahab of Hayward.

The district includes the East Bay in Alameda County and the northwestern corner of Silicon Valley in Santa Clara County, including Fremont, Hayward, Union City, Newark, Milpitas, Sunnyvale, and Santa Clara.

Due to redistricting, the 10th district has been moved around different parts of the state.

The current iteration resulted from the 2011 redistricting by the California Citizens Redistricting Commission.