Little fall; or a variant of Fallon
Falen is most commonly used as a modern phonetic spelling variant of the Irish surname Fallon. It is derived from the Gaelic name Fallamhain, which means leader or ruler, though some interpretations link it to the English word fall.
Less common today
Falen isn't in the latest US Top 1000. It last peaked at #7,534 in 2013.
US births per 5-year period, 1990βpresent (SSA data).