Bill Kelliher (born March 23, 1971) is a guitarist in the Atlanta, Georgia heavy metal band Mastodon. He is a native of Victor, New York. He shares guitar duties with Brent Hinds, playing mainly complex rhythm parts. Kelliher is married, with two young sons—the eldest one named Harrison, after Harrison Ford of Star Warsfame. He is also a Star Wars enthusiast, with a large collection of action figures and other merchandise from the franchise.
On June 12, 2007, Hinds and Kelliher won the Metal Hammer Golden Gods award for best shredders, Mastodon’s first ever award.