Cognomen Gastelú (Gastelú 
) , worldwide, is a very rare family name. The cognomen Gastelú is habitual in Latin America and the Caribbean, particularly Uruguay, where it is quite a rare surname, Peru, where it is a very rare surname, and Mexico, where it is an extremely rare surname. Much less frequently, Gastelú is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Gastelú | Uruguay, Argentina, United States, Mexico, Peru |
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haydee garcía gastelú AR (b. 1901) |
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| fernando m. gastelú Uruguayan writer, UY (b. 1902) |
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| josé benavides gastelú (b. 1941) |
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| carlos arturo torres gastelú researcher, ORCID id # 0000-0003-2527-9602 |
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Ana, Ramiro, Rocío, Renato, Daniel, Gonchi, Leslie, Javier, Nicole, Emilio, Isabel, Yvonne, Ximena, Mariano, Mónica, Alfredo, Ariadna, Claudia, Roberto, Gonzalo, Liliana, Eduardo, Pamela, Karina, Brenda, Carlos, Axel, Paul, Raul, Rosa, Luis, Juan, Erik, Flor, Karla, Kevin, Yolanda, Pablo, Diego, José, Julio, Erick, Zully, María, Monica, Sandra, Andrea, Angela, David, and Penelope