Surname Trdin (Trdin 
) , all around the world, is a rare last name. The family name Trdin is characteristic of Slovenia, where it is quite a rare surname, Croatia, where it is a rare surname, and Canada, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Trdin | Germany, Slovenia, Croatia, Canada |
| metka trdin Slovene actress, SI (b. 1972) |
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| miha trdin researcher |
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| andreja trdin SI |
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| nejc trdin SI |
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| ajda trdin SI |
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| miha trdin SI (b. 1986) |
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