Family name Furukusa (古草 
, Furukusa 
) , globally, is a rare cognomen. The cognomen Furukusa is habitual in Eastern Asia, particularly Japan, where it is a rare surname. Very seldom, Furukusa is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| 古草 | China |
| Furukusa | Japan |