The Sur Empire (Pashto: د سوریانو ټولواکمني) was an empire established by a Muslimdynasty of Pashtun origin who ruled a large territory in Northern part of South Asia for nearly 16 years, between 1540 and 1556, with Delhi serving as its capital. It interrupted the rule of the Mughal Empire under Humayun, who later restored the Mughal Empire by ending the Sur Empire.
The empire was founded by Sher Shah Suri, an ethnic Pashtun of the tribal house of Sur, who supplanted the Mughal dynasty as rulers of North India during the reign of the relatively ineffectual second Mughal Humayun. Sher Shah defeated badhsah-i-Hind ('Hindustani emperor') Humayun in the Battle of Chausa (26 June 1539) and again in the Battle of Bilgram (17 May 1540).
During the almost 17-year rule of the Sur dynasty, until the return of the Mughals to the throne, the region of the South Asia witnessed much economic development and administrative reforms. A systematised relationship was created between the people and the ruler, minimising corruption and the oppression of the public.
It was at the time of this bounty of Sultán Bahlol [Lodi], that the grandfather of Sher Sháh, by name Ibráhím Khán Súr,*[The Súr represent themselves as descendants of Muhammad Súr, one of the princes of the house of the Ghorian, who left his native country, and married a daughter of one of the Afghán chiefs of Roh.] with his son Hasan Khán, the father of Sher Sháh, came to Hindu-stán from Afghánistán, from a place which is called in the Afghán tongue "Shargarí,"* but in the Multán tongue "Rohrí." It is a ridge, a spur of the Sulaimán Mountains, about six or seven kos in length, situated on the banks of the Gumal. They entered into the service of Muhabbat Khán Súr, Dáúd Sáhú-khail, to whom Sultán Bahlol had given in jágír the parganas of Hariána and Bahkála, etc., in the Panjáb, and they settled in the pargana of Bajwára.