Blanca Estela Rubio is an American politician serving in the California State Assembly since 2016. She is a Democrat representing the 48th Assembly District, encompassing parts of the eastern San Gabriel Valley, including Baldwin Park, Covina, and Glendora. Prior to being elected to the Assembly, she was a board trustee for the Baldwin Park Unified School District, and a schoolteacher for 16 years. Rubio is a board member of the Chamber of Progress, a tech industry trade group.

The California State Assembly is the lower house of the California State Legislature, the upper house being the California State Senate. The Assembly convenes, along with the State Senate, at the California State Capitol in Sacramento.