William Jules Filante (October 22, 1929 in Brooklyn, NY – December 9, 1992 in Terra Linda, San Rafael, CA) was an American physician and politician from California and member of the Republican Party.

Filante first won election to the Marin-Sonoma based 9th district in the California State Assembly in 1978 by defeating Democratic incumbent Michael Wornum.

Even though the 6th District was heavily Democratic, Filante had represented a large chunk of it in the state legislature for 14 years and tried to parlay his moderate reputation into a win.

However, just before the start of the campaign, Filante underwent brain surgery and spent most of the race recuperating.

Fellow GOP assemblywoman Bev Hansen often served as his surrogate.