Family name Montes De Oca (Montes De Oca 
) , in the entire world, is a common cognomen. The last name Montes De Oca is characteristic of Latin America and the Caribbean, particularly Mexico, where it is quite a common surname, Uruguay, and the Dominican Republic. In absolute terms, the name is most common in Latin America and the Caribbean, particularly Mexico, Venezuela, and Peru.
| VARIANT | COUNTRY |
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| Montes De Oca | Peru, Dominican Republic, Mexico, Uruguay, Venezuela |
| josé montes de oca Spanish sculptor (1668-1754), ES (b. 1668) |
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ignacio montes de oca y obregón Mexican archbishop of the Catholic Church (1840-1921), MX (b. 1840) |
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salvador montes de oca Venezuelan catholic bishop, VE (b. 1895) |
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otermín laureano montes de oca domenech UY (b. 1930) |
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