Mohit Ray (Bengali: মোহিত রায়) (born 1954) is an environmental and human rights activist based in Kolkata. He has campaigned for saving the Adi Ganga, Bikramgarh Jheel and other water bodies of Kolkata. His seminal work in this field is the extensive research on the water bodies and heritage ponds of Kolkata. His work has been published by the Kolkata Municipal Corporation and Ananda Publishers. He has also published a number of papers in technical journals.