Cognomen Haineault (Haineault 
) , around the world, is a rare surname. The cognomen Haineault is characteristic of Canada, where it is a rare surname, New Zealand, and the United States, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Haineault | Canada, United States, New Zealand |
| pierre haineault (b. 1954) |
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| sylvie haineault CA |
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| damien g. haineault Film director (b. 1999) |
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