Cognomen Elfer (Elfer 
) , across the world, is a rare last name. The last name Elfer is habitual in Peru, where it is a rare surname, Honduras, and Myanmar, where it is a very rare surname. In absolute terms, it is the most numerous in the United States, Peru, and Myanmar. More prevalently, Elfer is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Elfer | United States, Myanmar, Peru, Guatemala, Philippines |
| elfer aladár HU (b. 1877) |
|
|
| david elfer British QC and judge (1941-2020), GB (b. 1941) |
|
|
| helmuth elfer German Nazi concentration camp inmate, block elder in Ebensee concentration camp |
|
|
| menuha elfer Victim of the Holocaust |
|