Last name Geider (Geider 
) , in the world, is a rare family name. The cognomen Geider is habitual in Namibia, where it is quite a rare surname, Austria, where it is a rare surname, and Hungary. Measured by absolute frequency, it is commonest in Germany, the United States, and Namibia. Very seldom, Geider is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Geider | Colombia, Namibia, United States, Peru, Germany |
| géza geider (b. 1850) |
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| horst geider German navy officer and world war II U-boat commander, DE (b. 1918) |
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| thomas geider German philologist and ethnologist (1953-2010), DE (b. 1953) |
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| richard geider researcher, ORCID id # 0000-0003-3276-047X |
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| richard j. geider Ph.D. Dalhousie University 1984 |
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| frank geider correspondence chess player |
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