John Riordan may refer to:
- John Riordan (mathematician) (1903–1988), American mathematician
- John Riordan (banker), American banker, "Oskar Schindler of the Vietnam War"
- John R. Riordan (born 1943), Canadian biochemist
- John Riordan (businessman), Canadian businessman, owner of Riordon Paper Mills and The Toronto Mail (from 1877 to 1895)
- John Riordan (jockey) (1936–2021), New Zealand jockey
See also
- John Riordan Three-Decker, a historic house in Worcester, Massachusetts
Topics referred to by the same termThis disambiguation page lists articles about people with the same name. If an internal link led you here, you may wish to change the link to point directly to the intended article. Category: