Cognomen Alfonsín (Alfonsin 
, Alfonsín 
, سانشيز 
) , all around the world, is quite a rare last name. The cognomen Alfonsín is habitual in Latin America and the Caribbean, particularly Argentina, where it is quite a rare surname, Uruguay, and Mexico, where it is a rare surname. Not in comparison with a country's population, this name is the most popular in Argentina, Mexico, and Spain. Very seldom, Alfonsín is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Alfonsin | Mexico, Brazil, Argentina, Spain, Indonesia |
| Alfonsín | Mexico, Argentina, United States, Spain, Uruguay |
| سانشيز | Iraq, Sudan, Morocco |
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raúl alfonsín former President of Argentina (1983-89), AR (b. 1927) |
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ricardo alfonsín Argentine politician and lawyer, AR (b. 1951) |
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jaime alfonsín Spanish lawyer, ES (b. 1956) |
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| quintín alfonsín Uruguayan writer, UY (b. 1910) |
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| alfonsín quintana Cuban singer, CU (b. 1923) |
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| luis ramiro alfonsín Argentine politician, AR (b. 1930) |
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diego alfonsín Galician writer and teacher, ES (b. 1980) |
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| antonio alfonsín |
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| francisco alfonsín Spanish actor, ES |
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Ana, Daniel, Javier, Estela, Emilio, Micaela, Alberto, Antonio, Adrián, Rodolfo, Gustavo, Gonzalo, Leandro, Enrique, Vicente, Octavio, Mercedes, Santiago, Almudena, Agustín, Cristina, Leonardo, Rubén, César, Carlos, Andres, Alba, Luis, Juan, Neel, Maria, Marta, Carla, Karen, Paula, Pablo, Nicolás, Raúl, Diego, Laura, José, Julia, Elena, Marcos, María, Manuel, Miguel, Alicia, Diana, and Virginia