Who were the Aryans that Hitler constantly referred to?

I agree with
the first post.

There are actually a kind of people that are referred to as
Aryans.  However, many of these people are not the sort that Hitler would have called Aryan.  In
fact, the Aryans are originally from India.

So Hitler essentially used the
word "Aryan" to refer to something that he made up.  In Hitler's racial terminology,
Aryans were the only people who could actually create a true civilization.  He believed that all
civilizations had been created by these Aryans who roamed around Eurasia creating
civilizations.  In modern times, Aryans had settled in Northern Europe.  As the first answer
says, they tended to be blonde and blue-eyed.  They lived in places like Germany, the
Scandianavian countries, Holland and England.