Family name Terza (Tertia 
, Terza 
, Terc 
) , throughout the world, is quite a rare cognomen. The surname Terza is habitual in the Dominican Republic, where it is quite a rare surname, Romania, where it is a rare surname, and Uruguay. In absolute terms, it is commonest in Indonesia, the United States, and Romania. Also, Terza is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Tertia | Australia, Namibia, South Africa, United States, Indonesia |
| Terza | Argentina, Romania, South Africa, United States, Indonesia |
| Terc | Dominican Republic, Poland, Argentina, United States, Czechia |
| Терза | Russia, Ukraine, Kazakhstan, Belarus |
| gaetano la terza (b. 1912) |
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| marizú terza Argentinian painter, AR (b. 1953) |
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| antonietta la terza researcher |
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| joseph vincent terza economist (Indiana University-Purdue University (IUPUI)) |
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| antonio la terza Italian politician |
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| pierluigi la terza IT |
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| valentina la terza IT (b. 1981) |
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