Last name Duplechan (Duplechan 
) , in all the world, is a very rare surname. The surname Duplechan is habitual in Northern America, particularly the United States, where it is a very rare surname, and Canada, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Duplechan | Canada, United States |
| larry duplechan American writer, US (b. 1956) |
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| elishja duplechan college basketball player (2019–2019) Omaha |
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