Jasmin is common as a male name in ex-Yugoslavian countries. It is predominantly used by Bosnian Muslims, but other nationalities use it also.
And, yes it is from the name of the flower. The flower is called jasmin in Croatian, Slovenian and Serbian and the noun has the male gender, therefore this form is used as a male name. Female forms are Jasmina and Jasminka.
Oh, and it's pronounced 'YAHS-meen'.
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