East Garo Hills is an administrative district in the state of Meghalaya in India.

The East Garo Hills district was formed in 1976, after the erstwhile Garo Hills district of Meghalaya was re-organised with a view to bring the administration closer to the people.

The district headquarters-complex of the district, christened as Williamnagar after the name of Captain Williamson A. Sangma the founder Chief Minister of the State of Meghalaya. Williamnagar is located on the vast plainlands along the bank of the Simsang River, at Simsanggre. These plainlands are in a sense historical, as it was here that the Garos made their last major resistance to the British intrusion into Garo Hills during the year 1837. The legendary Garo leader Pa Togan Nengminja Sangma was felled by the British, in skirmish, at Chisobibra, quite close to Wiliamnagar, on 12 December 1837.

The district headquarters are located at Williamnagar. The district occupies an area of 2603 km².

According to the 2011 census East Garo Hills district has a population of 317,618, roughly equal to the nation of The Bahamas. This gives it a ranking of 569th in India (out of a total of 640). The district has a population density of 122 inhabitants per square kilometre (320/sq mi) .Its population growth rate over the decade 2001-2011 was 26.75%. East Garo Hills has a sex ratio of 968 females for every 1000 males, and a literacy rate of 75.51%.

East Garo’s languages include A’Tong, a Tibeto-Burman language spoken by 10,000 people in Bangladesh and India.