Family name Welsz (Welsz 
) , all over the world, is a very rare cognomen. The cognomen Welsz is habitual in Hungary, where it is a rare surname, Austria, and Poland, where it is a very rare surname. Likewise, Welsz is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Welsz | Poland, Hungary, Brazil, United States, Austria |
| eva s. welsz Austrian writer, AT (b. 1948) |
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| welsz tamás HU (b. 1972) |
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