Cognomen Gadna (Gadna 
) , in all the world, is an extremely rare surname. The family name Gadna is habitual in Israel, where it is a very rare surname, and the United States, where it is an extremely rare surname. Much more frequently, Gadna is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Gadna | Brazil, United States, Tanzania, India, Israel |