Cognomen Siguenza (Siguenza 
) , around the globe, is a common last name. The cognomen Siguenza is habitual in Latin America and the Caribbean, particularly El Salvador, where it is quite a common surname, Guatemala, and Peru, where it is quite a rare surname. Not in comparison with a country's population, it is commonest in Latin America and the Caribbean, particularly El Salvador, Guatemala, and Mexico. Very seldom, Siguenza is the forename as well as the last name.
| francis siguenza French bicycle racer, FR (b. 1930) |
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| herbert siguenza American actor, US (b. 1959) |
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| gundisalvus of siguenza bishop of the Roman Catholic Church |
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