William David Hungate (born August 5, 1948) is an American bass guitarist noted as a member of the Los Angeles pop-rock band Toto from 1976 to 1982 and again from 2014 to 2015, and the son of judge William L. Hungate. Along with most of his Toto bandmates, Hungate did sessions on a number of hit albums of the 1970s, including Boz Scaggs's Silk Degrees and Alice Cooper's From the Inside.