John Slaughter
John Slaughter may refer to:
- John Brooks Slaughter, American engineer, Director of National Science Foundation, 1980–1982
- John Bunyan Slaughter, American rancher and banker.
- John Horton Slaughter, American lawman, Civil War soldier and gambler known as Texas John Slaughter
- Texas John Slaughter series on Wonderful World of Disney, 1958–1961
- John Slaughter, Member of Parliament for Gloucestershire
- John Slaughter , member of Chris Barber's jazz band