Family name Trdina (Trdina 
) , around the world, is a rare surname. The family name Trdina is characteristic of Slovenia, where it is quite a rare surname, Croatia, and Canada, where it is a very rare surname. In absolute terms, this name is the most popular in Slovenia, Croatia, and the United States.
| VARIANT | COUNTRY |
|---|---|
| Trdina | Slovenia, United States, Canada, Croatia |
|
janez trdina Slovene writer, SI (b. 1830) |
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joža trdina SI (b. 1892) |
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| tadej trdina Slovenian footballer, SI (b. 1988) |
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| andreja trdina SI |
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