Riordan
Riordan is a surname of Irish origin; "Rearden" is a variant of it. It may refer to:
- Persons
- Ann Fienup-Riordan (b. 1948), American cultural anthropologist
- Bill Riordan (1908–1973), Australian politician from Queensland; minister for the Navy 1946–1949
- Cory Riordan (b. 1986), American minor league baseball pitcher
- Daniel J. Riordan (1870–1923), American politician from New York; U.S. representative 1899–1923
- Daniel Riordan (b. 1984), Irish professional rugby union player
- Daniel Riordan (contemporary), American voice actor
- Darby Riordan (1888–1936), Australian politician from Queensland; member of the House of Representatives 1929–36
- Derek Riordan (b. 1983), Scottish professional football player
- Joe Riordan (b. 1930), Australian politician and government minister
- John Riordan (fl. 20th c.), American mathematician and author
- Linda Riordan (b. 1953), British politician; MP from Halifax since 2005
- Maurice Riordan (1953–), Irish poet, translator, and editor
- Michael Riordan (1889–1967), Irish-American police officer; chief of police of San Francisco, California
- Mike Riordan (b. 1945), American professional basketball player
- Pat Riordan (b. 1979), Canadian rugby union player
- Patrick William Riordan (1841–1914), American Roman Catholic archbishop
- Paul F. Riordan (1920–1944), American army officer; recipient of the Medal of Honor
- Richard Riordan (b. 1930), American politician from California; mayor of Los Angeles 1993–2001
- Rick Riordan (b. 1964), American author
- Steva Riordan (fl. early 20th c.), Irish hurler
- Terry Riordan (b. 1973), American professional lacrosse player
- Will Riordan (contemporary), American television producer
- Fictional characters
- Television
The Riordans was a soap opera that ran on Radio Telefís Éireann (Irish television) during the 1960s and 1970s.