Bangladesh national university is a public collegiate university of Bangladesh that was established in 1992 by an Act of Parliament as an affiliating university of the country to impart graduate and post-graduate level education to the students through its affiliated colleges, schools and professional institutions throughout the country. It is the third largest university in the world according to enrollment. The headquarters is in Gazipur, on the outskirts of Dhaka. After its establishment it affiliated association degree awarding colleges, where many of them were previously affiliated by the University of Dhaka, University of Rajshahi and University of Chittagong.