Nelli is a ♀ female name.
Nelli is a short form of Cornelia, but as well of Petronella, Helene, Eleonore and Elizabeth.
Nelli means “of the Cornelius family” and “horn” (from Cornelia), “the other Aenor”, “merciful” and “God is my light” (from Eleonore) and “God is abundance”, “God is my oath” and “God has sworn” (from Elizabeth).