Iron; strong as iron
Aisen is a rare name likely derived from the Germanic root 'isarn' or the Old High German 'isan', meaning iron. It shares etymological roots with the modern German word 'Eisen'. In some contexts, it is also considered a variant of the Japanese name Aisen, though its usage in the West typically follows the Germanic surname-to-first-name pattern.
About 5 boys were named Aisen in 2025.
US births per 5-year period, 1990–present (SSA data).
