James Christian Shaffer (born June 6, 1970), also known by his stage name "Munky", is an American musician best known as co-founder and guitarist of the nu metal band Korn.

Shaffer set up the side-project band Fear and the Nervous System in 2008 and is also the founder of Emotional Syphon Recordings, who have signed acts like Monster in the Machine and Droid.

Shaffer was ranked at No. 26 of Guitar World's 100 Greatest Heavy Metal Guitarists of All Time. Shaffer's work with Korn has resulted in over 40 million albums sold.