Cognomen Wiessmer (Wiessmer 
) , across the world, is a very rare surname. The cognomen Wiessmer is characteristic of Switzerland, where it is a rare surname, Croatia, where it is a very rare surname, and Germany. Not in comparison with a country's population, it is the most numerous in Switzerland, Germany, and the United States.
| VARIANT | COUNTRY |
|---|---|
| Wiessmer | United States, Croatia, Germany, Switzerland |