Khan is a common surname of people, especially Pushtoons hailing from Afghanistan and northern parts of Pakistan. For example Mr. Reza Khan would typically be a "pathan" with persian ancestry.
Wikipedia (http://en.wikipedia.org/wiki/Main_Page)
Category:Khan_Surname (http://en.wikipedia.org/wiki/Category:Khan_Surname)
version history (http://en.wikipedia.org/w/index.php?title=Category:Khan_Surname&action=history)
GNU Free Documentation Lizenz (http://en.wikipedia.org/wiki/Wikipedia:Text_of_the_GNU_Free_Documentation_License)
CC-by-sa (http://creativecommons.org/licenses/by-sa/2.5/)
