Last name Seider (Seider 
, Сейдер 
, סדר 
) , around the world, is quite a rare surname. The last name Seider is habitual in Germany, where it is quite a rare surname, Denmark, and Poland, where it is a rare surname. Not in comparison with a country's population, it most frequently occurs in Germany, the United States, and Brazil. Much less frequently, Seider is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Seider | Germany, United States, Poland, Denmark, Brazil |
| Сейдер | Kazakhstan, Russia, Ukraine |
| סדר | Israel |
| christopher seider Boy killed by customs official in 1770., US (b. 1758) |
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| friedrich samuel seider (b. 1766) |
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| andreas seider DE (b. 1857) |
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| august seider (b. 1901) |
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| richard seider German papyrologist, DE (b. 1913) |
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moritz seider German ice hockey player, DE |
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| ja'juan seider American-football player (1977-), US (b. 1977) |
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| scott seider researcher |
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| talia r seider researcher |
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| gerald seider Ph.D. Rheinisch-Westfälische Technische Hochschule Aachen 1991 |
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| chris seider |
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| lothar seider |
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