Family name Trieste (Trieste 
) , all around the world, is a rare last name. The cognomen Trieste is habitual in Italy, where it is a rare surname, France, and Israel, where it is a very rare surname. Measured by absolute frequency, this name is the most popular in Italy, the United States, and France. Also, Trieste is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Trieste | Italy, Brazil, United States, Philippines, France |
| fortunato da trieste IT (b. 800) |
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leopoldo trieste Italian actor, IT (b. 1917) |
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| trieste del grosso (1915-1943), IT (b. 1915) |
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| claudia trieste Italian model, IT (b. 1979) |
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| leopoldo trieste Italian economist (1980-), IT (b. 1980) |
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| giovanni da trieste catholic bishop |
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| gabriel trieste IT |
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| pietro trieste de pellegrini |
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