Mojo Nixon (born Neill Kirby McMillan, Jr., August 2, 1957 in Chapel Hill, North Carolina) is a satirical psychobilly musician.

Nixon initially recorded with Skid Roper, who mostly provided instrumental backup. Their third album Bo-Day-Shus!!! contained the song Elvis is Everywhere, a deification of Elvis Presley that is probably his best known song. He also frequently insulted contemporary celebrities such as MTV VJ Martha Quinn (in Stuffin' Martha's Muffin), Debbie Gibson and Rick Astley (in Debbie Gibson is Pregnant With My Two-Headed Love Child), Don Henley (in Don Henley Must Die), and David Geffen (in Bring Me the Head of David Geffen). Henley once appeared on stage with Nixon to perform Don Henley Must Die, which won him Nixon's respect. Skid Roper left for a solo career in 1990. Since then Nixon has performed with Jello Biafra, as well as a new backup band, The Toadliquors.

Nixon chose his stage name because he felt they were two words which should never go together. He is a supporter of the Libertarian Party and has a degree in political science and history from Miami University in Ohio. He was also the honorary captain of the United States luge team at the 1998 Winter Olympics, and is currently a DJ at a radio station in San Diego. He has appeared in a few movies, all of which, according to Nixon, are "shitty."