John Riordan

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

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* John Riordan Three-Decker, a historic house in Worcester, Massachusetts

Topics referred to by the same term

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