A modern invented name, likely a blend of Jasmine and Lynn.
Jaslen is a contemporary American creation without a singular ancient etymology. It most likely combines the floral 'Jasmine' with the popular suffix 'lyn' or 'len', resulting in a name that feels familiar yet remains rare. It follows the trend of creating melodic, multi-syllabic names for girls that emphasize soft consonant sounds.
Less common today
Jaslen isn't in the latest US Top 1000. It last peaked at #9,440 in 2008.
US births per 5-year period, 1990βpresent (SSA data).