Mihara (written: 三原) is a Japanese surname. Notable people with the surname include:
, Japanese politician , Japanese footballer , better known as Hiroshi Yamato, Japanese professional wrestler , football referee , Japanese politician, singer and actress , Japanese footballer , Japanese figure skater , Japanese Magic: the Gathering player , Japanese judoka , Japanese footballer , Japanese film director , Japanese manga artist Puti Kaisar Mihara (born 1986), Austrian model , Japanese boxer , Japanese actress , Japanese model and gravure idol Nathan Mihara, Associate Justice of the California Courts of Appeal, 6th District