Family name Гельмер (Helmer 
, Gelmer 
, Guelmer 
) , globally, is a common last name. The last name Гельмер is characteristic of Honduras, where it is quite a rare surname, Denmark, and Germany. Not in comparison with a country's population, it is commonest in the United States, Germany, and Brazil. Also, Гельмер is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Helmer | Brazil, Peru, Germany, United States, Colombia |
| Gelmer | Philippines, Peru, Germany, Colombia, Guatemala |
| Guelmer | Philippines, Peru, Honduras, United States, Colombia |
| Гельмер | Belarus, Ukraine, Russia, Kyrgyzstan, Kazakhstan |