California's 19th State Assembly district is one of 80 California State Assembly districts.

It is currently represented by Democrat Catherine Stefani of San Francisco.

The district encompasses the western, more residential parts of San Francisco along with several of its southern suburbs in San Mateo County, making it slightly more friendly towards Republicans than the neighboring 17th District.

The San Francisco side of the Golden Gate Bridge is located in this district.

Due to redistricting, the 19th district has been moved around different parts of the state.