Throughout the world, Sigfredo (Sigfredo 
) is quite a rare male given name. The first name Sigfredo is characteristic of Puerto Rico, where it is quite a rare male name, Philippines, and Bolivia, where it is a rare male name. Measured by absolute frequency, this name is the most popular in Philippines, the United States, and Mexico. Much less frequently, Sigfredo is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Sigfredo | Spain, Bolivia, Philippines, United States, El Salvador |
| sigfredo videras (b. 1932) |
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| sigfredo hillers ES (b. 1934) |
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| sigfredo chacón Venezuelan painter, VE (b. 1950) |
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| sigfredo ariel CU (b. 1962) |
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| sigfredo fuentes researcher |
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| sigfredo torres-gonzalez researcher ORCID ID = 0000-0002-4898-7591 |
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| sigfredo casero-ortiz Belgian basketball player (1997-), BE (b. 1997) |
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Soto, Morales, Mercado, Miranda, Santana, Sanchez, Serrano, Alvarez, Aguilar, Cabrera, Ramirez, Rosario, Delgado, Jimenez, Vazquez, Martinez, Santiago, Castillo, Bautista, Gonzalez, Figueroa, Rodriguez, Flores, Torres, Guzman, Garcia, Cruz, Rios, Ruiz, Diaz, Vega, Matos, Arias, Perez, Ramos, Rojas, Hernandez, Reyes, Lopez, Velez, Molina, Mendez, Santos, Suarez, Carmen, Castro, Romero, Rivera, Gomez, and Fernandez