John Vanderslice (born May 22, 1967 in Gainesville, Florida) is an American musician, formerly of mk Ultra but now performing with his own band.
After mk Ultra broke up in 1999, Vanderslice wasted little time building a solo reputation. In 2000, he gained national media attention over his single Bill Gates Must Die after concocting an elaborate hoax in which Microsoft supposedly threatened legal action over supposed trademark violations (the disc had a similar etching to a Windows installation disc).
His albums, painstakingly crafted from analog tape masters, have gained critical acclaim for their melodic quality. Vanderslice has spent much of the last few years on tour across North America, Europe, and Japan.
Vanderslice also founded a recording studio in 1997 called "Tiny Telephone". Located in the Mission District of San Francisco, Tiny Telephone has carved out a niche as the last all-analog recording studio in the Bay Area, and has a policy of setting recording rates under market prices.