Aryan

Aryans are an informal (possibly obsolete) grouping of people who speak Indo-Aryan/Indo-European/Indo-Iranian languages. The term Aryan comes from the Hindu Vedas, in which it describes the "noble one" and may in fact be a derivative of the name used by the Proto-Indo-Europeans for themselves. The Aryans are speculated to have been a group of nomadic Indo-Europeans who supposedly settled in or were native to India sometime in 1500 BCE. It is unsure where they originally came from, but it was most likely the Eurasian steppe, near the Caspian Sea (later occupied within historical times by the Scythians).

The term survives to modern times in the autonyms of some Aryan descendants, most notably in the name of the Indo-Iranian-speaking Middle Eastern country known as Iran. It may also underlie the name of Ireland (Irish: Éire, gen. Éireann), but there are other, competing etymologies.

The Aryans brought with them their indigenous religions and religious beliefs, which then fused with the native beliefs. Much has been made of the connections between Indra and Thor, for example. They also brought their own languages. The original understanding of the relationship between India, Iran, and Europe actually came about once haughty Europeans realized that their languages were all related to Sanskrit. You would think this would have tamed their racist colonialism, but apparently not.

No, they weren't Nordic
Contrary to the Nazi meme, there is no reason to believe that the Aryans were blond or blue-eyed, or indeed ever bore any relation to any European ethnic group at all. Nor is there any reason to believe that the Aryans ever came to Europe before early historic times, at least not until Neolithic immigration from the Russian steppes to Europe and the adoption across the continent of Proto-Indo-European dialects by the fair-skinned European natives.

The only people who have a claim to the "Aryan" ethnicity are natives in west, central and south Asian groups who live in areas like India, Iran ("Land of the Aryans"), Pakistan, and Afghanistan.

Modern European natives are a rather mixed-up lot, with many having ancestry traceable back thousands of years by way of their genes, though with bits and pieces of various other groups from around Europe, western Asia, and North Africa (not to mention some Neanderthal ancestry); their genetics are much less Aryan than their languages.

In conclusion, Hitler was a dipshit, Jesus was Jewish, and unless you are part of an Indo-Aryan ethnic group (such as Indian, Iranian, or Romani), you are not an Aryan. There is no genetic evidence that a distinct Aryan race even existed.