Cognomen Austn (Austn 
) , all over the world, is a very rare last name. The last name Austn is habitual in Germany, where it is an extremely rare surname, the United States, and Nigeria. More prevalently, Austn is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Austn | Germany, Nigeria, United States, India, Myanmar |