Surname Остермайер (Ostermaier 
, Ostermeier , Ostermeyer 
) , worldwide, is quite a common family name. The surname Остермайер is characteristic of Western Europe, particularly Germany, where it is quite a rare surname, Austria, where it is a rare surname, and Switzerland. Not in comparison with a country's population, the name is most common in Germany, the United States, and France.
| VARIANT | COUNTRY |
|---|---|
| Ostermeier, Ostermaier | Germany, Austria, United States, Canada, France |
| Ostermeyer | Germany, Switzerland, United States, Canada, France |
| Остермайер | Russia |