William Goldsmith is an American drummer best known as a member of Sunny Day Real Estate and former member of Foo Fighters. Currently drumming for Assertion, he has toured with Mike Watt and IQU, performed on many recordings, and played live with several bands and artists.

Sunny Day Real Estate is an American emo band from Seattle, Washington, formed in 1992. The band currently consists of founding members Jeremy Enigk, Dan Hoerner (guitar) and William Goldsmith (drums), alongside Greg Suran (guitar), who originally played with the band between 2000 and 2001, and Chris Jordan (bass), who joined the band in 2022. Founding bass guitarist Nate Mendel was a member of the band during three of its four incarnations.