Cognomen Grado (Grad 
, Grade 
, Gradus 
) , around the globe, is a common last name. The family name Grado is habitual in Romania, where it is quite a common surname, Slovenia, and Portugal, where it is quite a rare surname. Measured by absolute frequency, the name is most common in the United States, Philippines, and Romania. Very seldom, Grado is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Grad | Philippines, Poland, United States, Romania, Germany |
| Grade | Philippines, Brazil, Mexico, United States, Germany |
| Gradus | Spain, Poland, France, United States, United Kingdom |
| Grado | Philippines, Mexico, United States, Romania, Germany |
| giovanni da grado Italian patriarch, IT (b. 800) |
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| francesco de grado Italian engraver, IT (b. 1663) |
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| felicia maria de grado (born 1676) (b. 1676) |
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| filippo de grado engraver (18th century) (b. 1701) |
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| salvador sanz grado Roman Catholic bishop (1789-1851) (b. 1789) |
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| francisco álvarez del manzano y miranda de grado (b. 1781) |
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| alberto capilupi de' grado Italian engineer and politician, IT (b. 1848) |
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| henry-pierre-stuart ferrari da grado FR (b. 1849) |
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cristina grado Italian actress (1939-2016), IT (b. 1939) |
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| vicente di grado BR (b. 1922) |
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viola di grado Italian writer, IT (b. 1987) |
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jonathan grado American businessman and photographer, US (b. 1991) |
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| grado giovanni merlo italian historian, specialized in ecclesiastic history during the Middle ages (b. 1945) |
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| antonio di grado Italian literary critic and university professor, IT (b. 1949) |
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| valentina grado Italian-German jurist (1967-), IT (b. 1967) |
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