Lorenzo Sierra (born 1966 or 1967) is an American politician and a former Democratic member of the Arizona House of Representatives representing District 19 from 2019 to 2023.

Sierra was elected in 2018 to succeed retiring State Representative Mark Cardenas.

[2] Sierra graduated from Arizona State University with a degree in journalism, and was a member of Maricopa County Sheriff Paul Penzone's Hispanic Advisory Board, as well as served as Vice Chair of the Arizona Hispanic Chamber of Commerce.

[3]