Theory of Aryan invasion of India has been very imperative in historiography in India. The Aryans have been projected as that white colored superior race which established the foundation of great Indian Civilization in North India by most of the western philologists. Aryan Invasion Theory (AIT) has been a highly decisive theory in India since last one & a half century. Interestingly, this theory is in fact a hypothesis which states that the Aryans came to India from somewhere outside of this country, in 1500 BC and drove out the local Dravidians into South India. Local historians, philologists and archeologists especially belonging to Hindu community has been saying that this theory is constructed to set the fact that India was ruled and civilized all along by the outsiders. It is also postulated that AIT was in fact an item of imperialistic agenda of Asiatic Society of Bengal. One prominent member of this society and a liable servant of East India Company Friedrich Max Müller posited this Idea. While Pro-AIT scholars say that rejecting AIT is actually the agenda of 'Hindutva'. This article is a study of AIT along with its sustaining and discarding points and arguments. An effort has been made to analyze AIT from linguistics angle also to verify the perspective of Urdu and other Aryan languages.