Surname Taishi (Taishi 
, タイシ , Таиси 
) , all over the world, is a common last name. The last name Taishi is habitual in Japan, where it is quite a rare surname, Iraq, where it is a very rare surname, and Malaysia. Measured by absolute frequency, it is commonest in Japan, China, and Iraq. Much less frequently, Taishi is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Taishi | Japan, China, United States, India, Iraq |
| タイシ | Japan |
| Таиси | Kazakhstan, Russia |
| Таиши | Russia |
| ismail taishi Mongolian chieftain of the Northern Yuan dynasty (b. 1450) |
|