Enna (without the accent, though) is used as a girls' name in Germany. The name is of Low German and Frisian origin: It's considered a variant form of Änna, Änne, Aenna, Aenne (which are themselves variants of Anna and Anne) and/or the feminine form of Enno. Enno itself is a short form of names beginning with the element “arn” = “eagle” as well as of names beginning with the element “ein-” or “agin-” meaning “sword”. Variants include Enne and Enni.