Family name Kaltiainen (Kaltiainen 
) , all around the world, is a rare last name. The family name Kaltiainen is habitual in Finland, where it is quite a rare surname, Canada, where it is a very rare surname, and the United States, where it is an extremely rare surname.
| VARIANT | COUNTRY |
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| Kaltiainen | Finland, Canada, United States |
| janne kaltiainen researcher |
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| enni kaltiainen researcher |
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| aino kaltiainen Finnish association football player, FI |
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| matti kaltiainen Finnish ice hockey player, FI (b. 1982) |
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| joonas kaltiainen FI (b. 1993) |
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