Ōka (surname)

Ōka, Ohka, Ouka (桜花（おうか）), Ooka (大家（おおか）) as a surname may refer to:


 * Tomo Ohka (大家友和) (born 1976), a Major League Baseball player
 * Yumi Ohka (桜花由美) (born 1979), a Japanese professional wrestler