Surname Коттер (Cotter 
, Kotter 
, Коттер 
) , worldwide, is a common cognomen. The last name Коттер is habitual in Ireland, where it is quite a common surname, Saint Lucia, and Australia, where it is quite a rare surname. Not in comparison with a country's population, it most frequently occurs in the United States, Ireland, and the United Kingdom. Very seldom, Коттер is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Cotter | Australia, Germany, Ireland, United Kingdom, United States |
| Kotter | Germany, Canada, United Kingdom, United States, Switzerland |
| Коттер | Russia, Ukraine |