Surname Ycaza (Ycaza 
) , throughout the world, is a rare last name. The last name Ycaza is characteristic of Latin America and the Caribbean, particularly Panama, where it is quite a rare surname, Ecuador, where it is a rare surname, and Peru. Measured by absolute frequency, the name is most common in Panama, the United States, and Ecuador. Much less frequently, Ycaza is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Ycaza | Peru, Panama, Philippines, United States, Ecuador |
| juan-martin de ycaza (b. 1875) |
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| ana rosa marcos de ycaza American printmaker, US (b. 1915) |
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| rafael diaz ycaza poet, novelist, short story writer, and columnist, EC (b. 1924) |
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| a. r. de ycaza US (b. 1915) |
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| manuel ycaza American jockey (1938-2018), US (b. 1938) |
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| ana maría ycaza Ecuadorian tennis player, EC (b. 1951) |
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| ricardo ycaza Ecuadorean tennis player, EC (b. 1958) |
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| ingrid de ycaza singer, actress and TV presenter, PA (b. 1980) |
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| emilio ycaza American soccer player, US (b. 1997) |
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Ma, John, Joel, Jean, Juan, Neda, Evan, Irma, Ilse, Ivan, Ivet, Olga, Otto, Maria, Mario, Marco, Marã, Meche, Myrna, Sandy, Angel, Angie, Jose, Luis, Lucy, Gina, Mr, Ms, Mar, Max, Ana, Nic, Ian, Mary, Mark, Mily, Aaron, Mike, Alex, Kira, Paul, Rosa, Rose, Rene, Ryan, Dina, Galo, Gaby, Sara, and Chris