Arny is of Germanic origin, derived from the Old Norse personal name 'Arnfríðr', which means 'strong and peaceful'. It is a variant form of the more common names Arnold or Arne. In some cases, it may also be considered a diminutive of those names. Arny was popular during the Middle Ages but fell out of fashion over time.
The name Arny was quite popular in the year 1955, with five babies being born that year. However, it's not clear how this compares to other years or whether it has maintained popularity over time.