Konishi (written: 小西) is a Japanese surname. Notable people with the surname include:
Gaku Konishi (小西 岳) (born 1934), Japanese physicistHiroko Konishi (小西 寛子) (born 1975), Japanese voice actressKonishi Hirosada (小西 廣貞) (ca. 1810–1864), Japanese ukiyo-e artistHiroyuki Konishi (小西 裕之) (born 1963), Japanese gymnastHokuto "Hok" Konishi (born 1984), Japanese-born British dancerKatsuyuki Konishi (小西 克幸) (born 1973), Japanese voice actorKenichi Konishi (小西 健一) (born 1909), Japanese field hockey playerKenji Konishi (小西 健司) (born 1955), Japanese electronic musicianManami Konishi (小西 真奈美) (born 1978), Japanese actressMasakazu Konishi (小西 正一) (born 1933), Japanese neurobiologistMiho Konishi (小西 美帆) (born 1977), Japanese actressNagako Konishi (born 1945), Japanese composerRyosei Konishi (小西 遼生) (born 1982), Japanese actor and voice actorSadaaki Konishi, Imperial Japanese Army officerTakako Konishi (office worker) (died 2001), Japanese office worker and suicide victimTakako Konishi (synchronized swimmer) (born 1986), Japanese synchronized swimmerTokuro Konishi (小西 得郎) (1894–1977), Japanese baseball player and coachYasuharu Konishi (小西 康陽) (born 1959), Japanese musician, composer and DJYasuhiro Konishi (小西 康裕) (1893–1983), Japanese karatekaYukari Konishi, Japanese sport shooterKonishi Yukinaga (小西 行長) (1555–1600), Japanese daimyō