Riordan
Riordan or O'Riordan is the surname of the following persons:
- Bill Riordan (1908-1973), Australian politician
- Cait O'Riordan (born 1965 ), Irish bass player
- Daniel J. Riordan (1870-1923), American politician
- Derek Riordan ( b. 1983 ), Scottish football player
- Dolores O'Riordan (born 1971 ), Irish singer and songwriter
- John O'Riordan CSSp (* 1924), retired Bishop of Kenema
- John R. Riordan ( born 1943 ), Canadian biochemist
- Mike Riordan ( born 1945 ), American basketball player
- Patrick William Riordan (1841-1914), Archbishop of San Francisco
- Richard Riordan ( born 1930 ), American politician
- Rick Riordan (born 1964 ), American writer
- Disambiguation