Surname Stua (Stua 
, Sitoa 
) , all over the world, is a very rare cognomen. The surname Stua is habitual in Italy, where it is a very rare surname, Croatia, and Germany, where it is an extremely rare surname. Measured by absolute frequency, it is the most numerous in Italy, the United States, and China. Also, Stua is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Stua | Germany, China, Italy, United States, Tanzania |
| Sitoa | India, United States, Philippines |
| johann stua (b. 1879) |
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| mario stua Italian association football player (1916-1982), IT (b. 1916) |
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| giampietro della stua |
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