Surname Trepanier (Trepanier 
) , in the world, is quite a common family name. The cognomen Trepanier is characteristic of Canada, where it is quite a common surname, New Zealand, where it is quite a rare surname, and the United States, where it is a rare surname.
| VARIANT | COUNTRY |
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| Trepanier | Canada, France, New Zealand, United States, Belgium |
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cory trepanier Canadian artist, CA (b. 1968) |
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myriam trepanier Canadian ice hockey player and ice cross downhiller (1986-), CA (b. 1986) |
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| peter trepanier (b. 1952) |
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| noel trepanier Canadian association football player, CA (b. 1974) |
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| daniel trepanier college basketball player (2006–2009) Columbia |
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| steven j. trepanier researcher |
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| louis trepanier Peerage person ID=387451 |
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| lauren a trepanier researcher |
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| troy trepanier American automobile designer and builder |
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