A modern variant likely derived from Magdalena or Malena.
Maleny is a contemporary feminine name often used in Spanish-speaking communities. It is widely considered a creative contraction of Maria Elena or a variant of Magdalena, which refers to Mary Magdalene from the biblical town of Magdala. In some contexts, it is also associated with a picturesque town in Queensland, Australia, though its use as a given name is primarily linguistic.
Less common today
Maleny isn't in the latest US Top 1000. It last peaked at #2,266 in 1993.
US births per 5-year period, 1990βpresent (SSA data).