| 1883 | Morihei Ueshiba (O-Sensei) born in Tanabe, Japan. |
| Early 1900s | Ueshiba studies Daito-ryu Aiki-jujutsu under Sokaku Takeda, as well as sword, spear, and other martial arts. |
| 1920s | Ueshiba begins developing his own art, combining jujitsu, sword, and spiritual practice. |
| 1942 | The name “Aikido” is officially registered. |
| 1948 | Aikikai Foundation established in Tokyo as the world headquarters of Aikido. |
| 1960s–70s | Aikido spreads globally, largely through Ueshiba’s students establishing dojos worldwide. |
| 1969 | Morihei Ueshiba dies. His son Kisshomaru becomes Doshu (hereditary head). |
| Today | Major organizations: Aikikai, Ki Society, Yoshinkan, Iwama. Practiced worldwide, though no competition exists. |
