California's 66th State Assembly district is one of 80 California State Assembly districts.

It is currently represented by Democrat Al Muratsuchi of Rolling Hills Estates.

The district encompasses the heart of the South Bay region, including the Beach Cities and the Palos Verdes Peninsula.

Located southwest of Downtown Los Angeles, the district is relatively suburban and primarily affluent.

Due to redistricting, the 66th district has been moved around different parts of the state.