Surname Lačen (Lačen 
) , in all the world, is a very rare cognomen. The family name Lačen is habitual in Southern Europe, particularly Slovenia, where it is quite a rare surname, and Croatia, where it is a rare surname.
| marijan lačen Slovene defectologist, SI (b. 1947) |
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| franc lačen SI (b. 1945) |
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| nataša lačen Slovenian cross-country skier, SI (b. 1971) |
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