Mark White (born July 7, 1962) is the bass player for the early 1990s rock band Spin Doctors. He has collaborated with many musical groups, including America's Got Talent finalists The Robotix, The Heavy Pets, Eight53, and the Free World Jazz Ensemble. As a songwriter and bass player, he also has been an active teacher in several high-profile rock and jazz schools, such as the Rockin' Robin Music Center in Houston, Texas. White has also been an outspoken advocate for atheist rights, and was a keynote speaker at the American Atheists National Convention in Salt Lake City, Utah in 2014.