Kawahara (written: 川原, 河原 or かわはら in hiragana) is a Japanese surname. Notable people with the surname include:
Hiroyuki Kawahara (川原 弘之, born 1991), Japanese baseball playerKazuhisa Kawahara (河原 和寿, born 1987), Japanese footballerKazune Kawahara, Japanese manga artistKeiga Kawahara (川原慶賀, 1786–1860?), Japanese painterMasatoshi Kawahara (川原 正敏, born 1960), Japanese manga artistNatsumi Kawahara (かわはら なつみ, born 1981), Japanese manga artistNozomi Kawahara (born 1970), Japanese golferReki Kawahara (川原 礫, born 1974), Japanese writerSarah Kawahara, Canadian figure skater and choreographerShigeto Kawahara (川原 繁人, born 1980), Japanese linguistShugo Kawahara (川原 周剛, born 1980), Japanese footballerTatsuya Kawahara (川原 達也, born 1985), Japanese footballerYoshihisa Kawahara (川原 慶久, born 1976), Japanese voice actorYumiko Kawahara (川原 由美子, born 1960), Japanese manga artist