Ōka (disambiguation)

Ōka, Ohka, Ouka (おうか) or Ooka (おおか) may refer to:


 * Ōka (桜花（おうか）), blossom of cherry tree
 * Yokosuka MXY-7 Ohka (桜花（おうか）), a Japanese kamikaze aircraft in World War II
 * Ōka Station (相可（おうか）駅), a railway station
 * Ōka (surname) (おうか or おおか), a Japanese surname