In all the world, Wielle (Welby 
, Wolcott 
, Wielle 
) is a rare primarily boy's, but very infrequently feminine given name. The first name Wielle is habitual in the Dominican Republic, where it is a rare boy's name, the United States, where it is a very rare male name, and Indonesia. Measured by absolute frequency, it most frequently occurs in the United States, Indonesia, and Brazil. More prevalently, Wielle is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Welby | Indonesia, United Kingdom, Ireland, United States, Canada |
| Wolcott | United Kingdom, Australia, Ireland, United States, Canada |
| Wielle | Brazil, Belgium |
| Wollacott | Germany, United Kingdom, Australia, United States, New Zealand |