Alok Bhattacharya (born 1951) is an Indian parasitologist, academic and a professor at the School of Life Sciences of the Jawaharlal Nehru University. He chairs the Biotechnology Information System Network (BITSNET) as well as the Life Sciences Expert Committee of FIST program of the Department of Science and Technology (DST). He is an elected fellow of the Indian Academy of Sciences and the Indian National Science Academy and is known for his studies on Entamoeba histolytica and species-specific calcium binding protein and its gene.