"Hi-yah" and "Hi-yah!" redirect here. For the streaming service, see
Hi-YAH!
For the village in Iran, see
Kiai, Iran. For the expert in Islam, see
Kyai. For the radio station, see
KIAI.
In Japanese martial arts a kiai (Japanese: 気合, ) is a short shout uttered when performing an assault.
Traditional Japanese dojo generally uses single syllables beginning with a vowel. The practice has become a part of Asian martial arts in popular culture, especially in martial arts films, in writing often rendered in variants such as Hi-yah!, Aiyah!, Eeee-yah! or Hyah!. A kiai is usually not the word "kiai" itself.