Cognomen Degregorio (Degregorio 
) , all around the world, is quite a rare family name. The cognomen Degregorio is habitual in Argentina, where it is quite a rare surname, Uruguay, where it is a rare surname, and the United States. Measured by absolute frequency, the name is most common in the United States, Argentina, and Italy.
| VARIANT | COUNTRY |
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| Degregorio | Italy, United States, Argentina, Canada, France |
De Gregorio, Degregório, Di Gregorio, Digregorio, Gregorio, Грегорио, Грегоріо, and 格雷戈里奥
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jerry degregorio American basketball player-coach, US (b. 1962) |
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| william a. degregorio (b. 1946) |
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| scott degregorio (b. 1968) |
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| r.e. degregorio botanist |
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| ron degregorio American ice hockey administrator, US |
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| zachary patrick degregorio researcher (ORCID 0000-0003-1039-6515) |
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| vincent degregorio Ph.D. Clarkson University 1987 |
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| suzanne j. degregorio |
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