Surname Haaja (Haaja 
) , around the globe, is a rare family name. The family name Haaja is habitual in Finland, where it is quite a rare surname, and Australia, where it is a very rare surname. Very seldom, Haaja is the forename as well as the last name.
| teemu haaja Finnish association football player, FI (b. 1972) |
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| jesse haaja Finnish film director, FI (b. 1983) |
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| matti haaja FI |
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Mr, Jouni, Joona, Jesse, Jussi, Tanja, Teemu, Noora, Henna, Heidi, Hilda, Ville, Vilma, Virve, Päivi, Riikka, Joonas, Johanna, Jaana, Pauliina, Janne, Petri, Ms, Manu, Miia, Samu, Shja, Jani, Jari, Juha, Jyri, Eija, Isto, Ilpo, Maria, Marko, Minna, Mikko, Miika, Riina, and Valtteri