East India, or Eastern India, is a region of India consisting of the states of West Bengal, Jharkhand, and Orissa. The state of Bihar is variously included in East India or in North India. Geographically the region lies between North India and North-East India. The states of Orissa and West Bengal share many cultural and linguistic characteristics with Bangladesh and with the state of Assam. Together with Bangladesh, West Bengal formed the ethno-linguistic region of Bengal before Partition in 1947.

The region was the historical centre of the Sunga and Pala empires that ruled much of the Indian sub-continent at their prime. In medieval India, it was incorporated into the Mughal and then the British empire. After independence in 1947, the states joined the Indian Union and took their current from after the States Reorganization Act of 1956. Today, they continue to face problems of overpopulation, environmental degradation and pervasive corruption despite significant economic and social progress.