Surname Constanzo (Constanzo 
) , around the globe, is quite a rare family name. The family name Constanzo is characteristic of Latin America and the Caribbean, particularly Chile, where it is quite a common surname, the Dominican Republic, where it is quite a rare surname, and Argentina. Much less frequently, Constanzo is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Constanzo | Argentina, Chile, United States, Mexico, Dominican Republic |
| fernando constanzo Spanish military personnel, ES (b. 1669) |
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| francisco constanzo Uruguayan boxer, UY (b. 1912) |
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| constanzo mangini Italian ice hockey player, IT (b. 1918) |
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| ted constanzo American football player (b. 1956) |
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| adolfo de jesús constanzo American serial killer (1962–1989), US (b. 1962) |
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| alba ximena zambrano constanzo researcher (ORCID 0000-0002-0052-3456) |
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| felipe constanzo researcher |
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| freddy constanzo researcher |
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| remo constanzo politician, AR |
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| joe constanzo Australian judoka, AU |
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| steve constanzo Australian professional basketball player, AU (b. 1988) |
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| constanzo orsini |
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| deborah constanzo volleyball player, DO (b. 1994) |
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| claudia di constanzo (b. 1985) |
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