Family name Orosa (Orosa 
) , throughout the world, is quite a rare cognomen. The cognomen Orosa is habitual in Philippines, where it is a rare surname, Uruguay, and Spain. In absolute terms, it is commonest in Philippines, Spain, and the United States. Very seldom, Orosa is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Orosa | Spain, Mexico, Philippines, United States, Argentina |
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severina luna de orosa Filipino doctor, PH (b. 1890) |
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maria orosa Filipino chemist (1893-1945), PH (b. 1893) |
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| sixto y. orosa Filipino physician (1891-1981), PH (b. 1891) |
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| rosalinda l. orosa Filipino writer, PH (b. 1928) |
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| juan j. orosa Mexican writer, MX (b. 1969) |
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| beatriz orosa researcher |
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| josé antonio orosa researcher |
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| pablo lópez orosa Spanish journalist, ES (b. 1985) |
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| cristian orosa Andorran association football player, AD (b. 1990) |
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| josé m. orosa UY |
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