Surname Reniak (Reniak 
) , in all the world, is a very rare family name. The family name Reniak is characteristic of Northern America, particularly Canada, where it is a very rare surname, and the United States, where it is an extremely rare surname. Much less frequently, Reniak is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Reniak | India, Canada, United States |
| marian reniak Polish writer (1922-2004), PL (b. 1922) |
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