Cognomen Terschak (Terschak 
, Тершак 
) , all over the world, is a rare family name. The family name Terschak is habitual in Ukraine, where it is a rare surname, Romania, and Austria. In absolute terms, the name is most common in Ukraine, the United States, and Romania.
| VARIANT | COUNTRY |
|---|---|
| Terschak | United States, Romania, Austria, Germany |
| Тершак | Ukraine, Russia |
|
adolf terschak (1832-1901), CZ (b. 1832) |
|
|
emil terschak non-fiction writer (1858-1915), AT (b. 1858) |
|
| federico terschak German writer and mountaineer (1890-1977), DE (b. 1890) |
|
|
| ricarda terschak Romanian author (1929-2012), RO (b. 1929) |
|
|
|
henriette terschak |
|