John Madigan

John Madigan may refer to:
 * John Madigan (politician) (1966–2020), Australian politician
 * John Madigan (Gaelic footballer), Irish player of Gaelic football
 * John Madigan (ringmaster) (1850–1897), American circus performer
 * John Madigan (rugby union) (born 1994), Irish rugby union player
 * John Madigan (sportsperson, born 1946) (1946–2023), Irish rugby union player