Dillen

Dillen is an uncommon feminine name that appears to be a variant spelling of Dylan or Dillon. Traditionally masculine, Dylan comes from Welsh mythology and means "son of the sea" or "tide." This spelling variation with an 'e' instead of 'o' or 'a' gives it a slightly softer quality that may be why it's occasionally used for girls despite its masculine origins. The name has a contemporary feel and brings to mind associations with nature through its connection to water. As a feminine name, Dillen is very rare, appealing to parents looking for a gender-neutral option with Celtic roots and a modern, streamlined sound.

As of October 2026, Dillen ranked #18395 in US births in 2007 SSA, peaked at #6134 in 2003.