The Ghurid invasion of Bengal, commonly known as Muhammad Bakhtiyar Khalji's conquest of Bengal, in 1202/3 or 1204/5, was a military campaign of Ghurid dynasty led by Muhammad Bakhtiyar Khalji against the Sena dynasty. Muhammad Bakhtiyar Khalji emerged victorious in his campaign at the Sena capital, Nabadwip. He established his kingdom at Lakhnauti which included a small part of Varendra. Following their defeat, Lakshmana Sena, the eighty years old ruler of the Sena dynasty, retreated to the southeastern region of Bengal.