Cognomen Yammer (Yammer 
) , worldwide, is a very rare family name. The last name Yammer is habitual in Israel, where it is a very rare surname, the United States, and Venezuela, where it is an extremely rare surname. In absolute terms, it is the most numerous in the United States, India, and Israel. Also, Yammer is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Yammer | Philippines, India, Venezuela, United States, Saudi Arabia |