Onan is a person in the biblical Book of Genesis.
Onan may also refer to:
People Onán Barreiros (born 1981), Spanish sailor Onan Masaoka (born 1977), American Major League Baseball pitcher Onan Thom (born 1984), Guyanese swimmer who competed at the 2004 Summer Olympics Arzum Onan (born 1973), Turkish television actress Ömer Onan (born 1978), Turkish basketball player Yiğit Onan (born 2002), Turkish basketball player
Other uses Ōnan, Shimane, Japan, a town Onan, Virginia, United States, an unincorporated community Onan, a line of generators manufactured by Cummins Power Systems, a subsidiary of Cummins
See also Ryan O'Nan (born 1982), American actor, writer, and director Onans, French commune O.N.A.N., fictional organization in the novel Infinite Jest Onen, a mourner in Judaism Onen (surname) Onin (disambiguation)