Michael Riordan

Michael or Mike Riordan may refer to:
 * Michael Riordan (physicist) (born 1946), American physicist and historian
 * Michael H. Riordan (born 1951), American economist
 * Michael Paul Riordan (1789–1862), Christian Brother
 * Mike Riordan (basketball) (born 1945), American basketball player
 * Mike Riordan (American football), American football player