Family name Wallyn (Wallyn 
) , across the world, is quite a rare last name. The cognomen Wallyn is characteristic of Belgium, where it is quite a rare surname, France, and Australia, where it is a very rare surname. Measured by absolute frequency, it is commonest in France, Belgium, and the United States. Much less frequently, Wallyn is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Wallyn | United Kingdom, Belgium, Australia, United States, France |
|
willem wallyn Belgian actor and director, BE (b. 1960) |
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