Robert J. Blumenfield (born September 13, 1967) is an American elected official in Southern California. Blumenfield is the Los Angeles City Councilmember for the 3rd Council District which encompasses the southwestern San Fernando Valley neighborhoods of Los Angeles, including Canoga Park, Reseda, Tarzana, Winnetka, and Woodland Hills. Blumenfield took office on July 1, 2013. Blumenfield previously represented the 45th district in the California State Assembly, which also covers the southwestern San Fernando Valley.