Cognomen Tikkaoja (Tikkaoja 
) , in the world, is a rare family name. The surname Tikkaoja is habitual in Northern Europe, particularly Finland, where it is quite a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Tikkaoja | Finland |
| väinö tikkaoja Finnish politician, FI (b. 1909) |
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| oona tikkaoja Finnish sculptor, FI (b. 1976) |
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