Hirabayashi (written: ) is a Japanese surname. Notable people with the surname include:
, Japanese boxer Gordon Hirabayashi (1918–2012), American sociologist , Japanese writer Asako Hirabayashi (born 1960), Asian-American contemporary composer and harpsichordist
See also Hirabayashi v. United States (1943), a United States Supreme Court case Hirabayashi v. United States (1987), a case overturning conviction of Gordon Hirabayashi Hirabayashi Station (disambiguation), railway stations in Niigata and Osaka, Japan 6390 Hirabayashi, a main-belt asteroid