.

Keeping this in view, is Khan and Pathan same?

Khan is a title given to pathans for their bravery. Pathan and Pashtun is the same thing. Khan was a title given to muslim rulers, and now is a common surname which is commonly used by the Pashtun people, due to the aryanisation of that particular part of asia.

Also, is Khan a Sikh name? Khan being used as surname rather than a title. Khan as a surname is usually used by people of Pashtun descent in South Asia and Afghanistan. Then we have Afghan people from Khyber Pakhtunkhwa which was historically Afghan and is still inhabited by Afghan Pashtuns but was annexed into India by Sikh Empire.

In this way, is Khan Indian or Pakistani?

Used in the Rourans firstly, and later more widely by Islamic chieftains in what is now India, Pakistan and Bangladesh. Khan is a common surname particularly among Muslims of Central and South Asian origin.

Is Pathan a caste?

William Crooke, (Tribes and Castes of North-Western India, 1896) states that the word 'Pathan' is an Indian form of the Pushto word Pukhtana. The Pathans are considered fourth in rank, below the Sayyid, Sheikh and Mughal in Muslim hierarchy.