James Donald "Jim" Root (born October 2, 1971), also known by his number #4, is an American musician known for being the rhythm guitarist of the heavy metal band, Slipknot, and the lead guitarist for rock band, Stone Sour. He was the last member to join the current line-up of Slipknot, in January 1999. James Root has performed in bands such as Atomic Opera, Deadfront and Stone Sour; the latter which he joined in 1995, and returned to along with vocalist Corey Taylor, during its revival in 2002. Prior to joining Slipknot, he worked as a screenprinter, waiter, and busboy.

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