Grinaičiai was formerly part of the German Empire. In the German Empire, the place was called Grünheide.
The place is now called Grynaičiai and belongs to Lithuania.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Grünheide | German Empire | Memel | before the Versailles Treaty |
| Grynaičiai | Lithuania | Klaipėda | after the Versailles Treaty |
| Grünheide | German Empire | Memel | 1939 |
| Grinaičiai | Soviet Union | Priekulė/Prekule | 1945 |
| Grinajčjaj | Soviet Union | Priekulė/Prekule | 1945 |
| Grynaičiai | Lithuania | Šilutė | 1992 |