Last name Ingrao (Ingrao 
) , in the world, is quite a rare family name. The last name Ingrao is characteristic of Italy, where it is quite a rare surname, Austria, where it is a rare surname, and Belgium. In absolute terms, it is commonest in Italy, the United States, and France. Very seldom, Ingrao is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Ingrao | Belgium, Italy, United States, Argentina, France |
| francesco ingrao Italian politician (1843-1918), IT (b. 1843) |
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pietro ingrao Italian politician (1915-2015), IT (b. 1915) |
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| giovanni ingrao Italian engineer (1895-1940), IT (b. 1895) |
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christian ingrao Academic french historian of Nazism, FR (b. 1970) |
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| charles w. ingrao historian (b. 1948) |
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| chiara ingrao Italian writer, IT (b. 1949) |
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| osvaldo ingrao Argentinian association football player, AR (b. 1957) |
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| ignazio ingrao Italian journalist, IT (b. 1969) |
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| carlo ingrao researcher, ORCID id # 0000-0002-3359-2458 |
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| marco ingrao footballer, IT (b. 1982) |
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