Aryan was, is, and shall continue to be an ethnicity. Only NOT a German or European one.
The true Aryani originally came from what is now Kazakhstan and the area of Russia bordering it. They migrated to India and as far west as Europe (introducing agriculture to it and influencing its languages, etc), as well as what became Iran, originally spelled "Aran," which means, "Land of the Aryan."
The only true Aryans live - now, today - in India, Iran, and some countries in between (Afghanistan, Pakistan, Kyrgyzstan, etc)