Last name Ciudad (Ciudad 
, Syoda 
) , throughout the world, is quite a rare surname. The cognomen Ciudad is habitual in Peru, where it is quite a rare surname, Spain, and Chile. Measured by absolute frequency, it is the most numerous in Philippines, Spain, and Peru. Also, Ciudad is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Ciudad | Peru, Philippines, Argentina, Spain, Chile |
| Syoda | India |
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rafael gambra ciudad Spanish philosopher, ES (b. 1920) |
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| apolonio lópez ciudad ES (b. 1883) |
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| carlos j ciudad researcher |
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| diego collado ciudad Spanish politician, ES |
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| david ciudad researcher |
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| sonia ciudad researcher |
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| aleix ciudad researcher |
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| pedro ciudad researcher |
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| carlos ciudad researcher |
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| toni ciudad researcher |
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| laura ciudad researcher |
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| gemma ruano ciudad Spanish association football player, ES (b. 1983) |
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| cristina flora molina ciudad Spanish politician, ES (b. 1986) |
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| mario ciudad |
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| yaima carrazana ciudad CU (b. 1981) |
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