There are several major variants of Aikido. The root variant is the "aikikai", founded by Morihei Ueshiba, and now headed by the founder's grandson, Moriteru Ueshiba. Several organizations in the United States are affiliated with the aikikai, including the United States Aikido Federation, the Aikido Association of America, and Aikido Schools of Ueshiba.
Other major variants include:
- The "Ki Society", founded by Koichi Tohei
- Yoshinkan Aikido, founded by Gozo Shioda
- The Kokikai organization, headed by Shuji Maruyama
- Keep One Point
- Relax Completely
- Keep Weight Underside
It is thought by some that the origination of Aikido exists in Kojiki.