Across the world, Seidner (Seidner 
) is an extremely rare boy's first name. Much more prevalently, Seidner is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Seidner | Germany, Romania, Austria, United States, Slovakia |
| lazar seidner holocaust victim, b. 1864-03-27, CZ (b. 1864) |
|
|
| walther seidner RO (b. 1938) |
|
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| walther gottfried seidner (b. 1938) |
|