Cognomen Haapoja (Haapoja 
) , all over the world, is a rare surname. The last name Haapoja is characteristic of Finland, where it is quite a rare surname, Estonia, where it is a rare surname, and the United States, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Haapoja | Finland, Estonia, United States, Australia |
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matti haapoja Finnish serial killer (1845-1895), FI (b. 1845) |
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juho haapoja Finnish boxer, FI (b. 1980) |
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| kalevi haapoja Finnish actor, FI (b. 1932) |
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| susanna haapoja Finnish politician (1966-2009), FI (b. 1966) |
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| terike haapoja Finnish photographer, FI (b. 1974) |
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| mervi haapoja FI |
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| ville haapoja basketball player (b. 1998) |
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Mr, Niko, Elle, Iiro, Matti, Mikko, Miika, Sampo, Siiri, Soile, Antti, Chris, Bobby, Brian, Kalli, Kevin, Paula, Pekka, David, Diane, Donna, Donny, Tero, Tomi, Juho, Juha, Ms, Ann, Anu, Amy, Aki, Tim, Esa, Mark, Sami, Samu, Duane, Anni, Kris, Rose, Dave, Lisa, Lois, Jane, Jani, John, Jere, Judy, Kaye, and Larry