•
Ann Fienup-Riordan (born 1948), American cultural anthropologist •
Bill Riordan (1908–1973), Australian politician from Queensland; minister for the navy 1946–1949 •
Daniel J. Riordan (1870–1923), American politician from New York; U.S. representative 1899–1923 •
Daniel Riordan (born 1984), Irish professional rugby union player •
Daniel Riordan (born 1958), American voice actor •
Darby Riordan (1888–1936), Australian politician from Queensland; member of the House of Representatives 1929–36 •
Derek Riordan (born 1983), Scottish professional football player •
Fergus Riordan (born 1997), Spanish actor •
Hugh D. Riordan (1932–2005), American psychiatrist and medical researcher •
James Riordan (1936–2012), English novelist, broadcaster, sports historian, association football player and Russian scholar •
Joe Riordan (1930–2012), Australian politician and government minister •
John Riordan (banker), American banker who rescued 105 South Vietnamese •
John Riordan (mathematician) (1903–1988), American mathematician and author •
Linda Riordan (born 1953), British politician; MP from Halifax since 2005 •
Maurice Riordan (born 1953), Irish poet, translator, and editor •
Michael H. Riordan (born 1951), American economics professor • Michael L. Riordan (born 1957), the founder and CEO/Chairman (1987–1997) of biotechnology company
Gilead Sciences •
Mike Riordan (basketball) (born 1945), American professional basketball player •
Pat Riordan (born 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 (1930–2023), American politician from California; mayor of Los Angeles 1993–2001 •
Richard Riordan (Australian politician) (born 1972), Australian politician •
Rick Riordan (born 1964), American author •
Steva Riordan (1876–after 1908), Irish hurler •
Terry Riordan (born 1973), American professional lacrosse player •
Tim Riordan (born 1960), American football player •
William F. Riordan (1941–2020), Justice of the New Mexico Supreme Court
Fictional characters •
Dallas Riordan, character in the Marvel Comics universe. • Nita Riordan, character in
Louis L'Amour's Kilkenny books. •
The Riordans, a 1960s–70s soap opera on RTÉ (Irish television) ==See also==