The subject of religious conversion is rarely studied with reference to Hinduism. On the other hand, reports of adivasi 're-conversion' imply that their Hindu identity is taken for granted, justifying in turn the need for re-conversion. As a further contradiction, while Hinduisation involves their integration with the varna order, they are simultaneously regarded as outcastes - a process that involves hegemony and exploitation of the adivasis and outcastes. This paper, based on the questioning and interrogating the way conversion has been located, takes up the history of conversion in Orissa over the last 200 years