What has been the relationship of nationalism to nature in India? Starting with this basic yet hitherto unexamined question, this article examines the varieties of nationalism that can be associated with nature love and ideas of nature conservation in India through the 20th century. After identifying the limitations of the dichotomised approach that explains nationalism as either statist or culturalist, this article also examines the extent to which this dualist and oppositional view of nationalism informs and constrains public debate on ideas of nature and environmental management in India. A key argument made here is that nationalism that is thin and exclusive, and thereby inherently the source of conflict and confrontation, is not a new problem in India, and the tendencies for the emergence of thin nationalisms around ideas of nature and their relation to heritage and conservation were already present in the ecological debates and post-War conditions of the mid 20th century as the sun finally set on the British empire.