Family name Orza (Orza 
) , in all the world, is quite a rare last name. The cognomen Orza is habitual in Romania, where it is quite a rare surname, Hungary, where it is a rare surname, and Italy. In absolute terms, the name is most common in Romania, Italy, and the United States. Much less frequently, Orza is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Orza | Italy, Argentina, United States, Nigeria, Romania |
| cornel orza association football player, US (b. 1916) |
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| josé antonio orza Spanish politician, ES (b. 1941) |
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| j. a. g. orza researcher, ORCID id # 0000-0002-7362-1874 |
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| luigi orza Italian electronic engineer, IT |
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| orza tanem Algerian Female Painter, DZ |
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| ramona alexandrina orza Ph.D. Technische Universiteit Eindhoven |
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| anamaria orza RO |
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| ramon orza |
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| ștefan orza Romanian professional kickboxer, RO |
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