Bhati was a large region of medieval Bengal, referred to by Abu'l-Fazl ibn Mubarak and by others until at least the 17th-century CE, during the period of the Mughal Empire. It encompassed the river delta area now lying on the borders of Bangladesh and West Bengal and often referred to as eastern Bengal.
Bhati was one of the forested areas that the Mughals began to turn into arable land. The historian Richard Eaton says that:
A distinguishing feature of East Bengal during the Mughal period — that is, in "Bhati" — was its far greater agricultural productivity and population growth relative to contemporary West Bengal. Ultimately, this arose from the long-term eastward movement of Bengal's major river systems, which deposited the rich silt that made the cultivation of wet rice possible.
Among its rulers was Musa Khan, who opposed the Mughals but was defeated by them and imprisoned for some time in Dhaka, being freed in 1613 and thereafter co-operating with his former enemies in various military expeditions.