Cognomen Остоич (Ostoich 
, Остоич 
) , in all the world, is a rare family name. The surname Остоич is characteristic of Argentina, where it is quite a rare surname, Bulgaria, where it is a rare surname, and Chile. In absolute terms, this name is the most popular in Argentina, the United States, and Bulgaria.
| VARIANT | COUNTRY |
|---|---|
| Ostoich | Canada, Argentina, Chile, United States, Bulgaria |
| Остоич | Russia |
|
димитър остоич BG (b. 1928) |
|