All around the world, Tadafusa (Tadafusa 
, Огасавара 
) is a very rare male first name. The given name Tadafusa is habitual in Eastern Asia, particularly China, where it is an extremely rare male name.
| VARIANT | COUNTRY |
|---|---|
| Tadafusa | Japan, China |
| Огасавара | Russia |
| taira no tadafusa (b. 1150) |
|
|
| matsudono tadafusa (b. 1193) |
|
|
| matsudaira tadafusa (b. 1619) |
|
|
| ogasawara tadafusa (b. 1727) |
|