Family name Costagliola (Costagliola 
) , in all the world, is quite a rare cognomen. The family name Costagliola is characteristic of Italy, where it is quite a rare surname, France, where it is a rare surname, and Argentina. In absolute terms, it is the most numerous in Italy, France, and the United States. Much less frequently, Costagliola is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Costagliola | France, Argentina, Chile, United States, Italy |
| gennaro costagliola Roman Catholic archbishop, IT (b. 1850) |
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| aniello costagliola IT (b. 1871) |
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| leonardo costagliola Italian footballer and manager (1921-2008), IT (b. 1921) |
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| dominique costagliola French epidemiologist, FR (b. 1954) |
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| bernard costagliola French historian (b. 1958) |
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| catello costagliola researcher |
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| alessandro costagliola researcher (ORCID 0000-0003-0377-1241) |
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| giorgio costagliola researcher (ORCID 0000-0002-4160-3727) |
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| giulia costagliola researcher |
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| sabine costagliola researcher |
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| maria antonietta costagliola researcher (ORCID 0000-0003-4585-3763) |
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| francesco costagliola researcher ORCID id 0000-0002-9155-5188, SE |
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| gianluca costagliola researcher (ORCID 0000-0002-2224-1177) |
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| anna costagliola researcher |
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| alessandro costagliola researcher (ORCID 0000-0002-7962-2843) |
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