Prabir Ghosh (born March 1, 1945) is the president of the Humanists' Association based in Kolkata. He was once referred to in the media as being from the "Rationalist Association of India". A "vociferous debunker", he has "crusad[ed] against soothsayers and godmen in eastern India" and survived "at least 20 attempts" on his life since the mid-1980s. His campaigning style is deliberately provocative and intended to raise public awareness of the rationalist cause. The documentary film "Guru Busters" features several of his confrontations with charlatans and quacks in the Kolkata area. He is the author of a number of Bengali language books disputing supernatural claims.
Prabir currently offers INरू2 million (US$50,000) "to anyone who claims to possess supernatural power of any kind and proves the same without restoring [sic] to any trick, in a location specified by Prabir Ghosh." The association states:
We don’t have the challenge money 20 lakhs (2 million) with us. But our supporters and well-wishers have committed to help us out in case we need it. But we are confident we will never need the money. The rationalist will win all the challenges.