David Rasnick

David William Rasnick (born 1948) is an American biochemist known for his association with the AIDS denialist movement, which denies the fact that HIV is the cause of AIDS, and for his involvement with clinical trials in South Africa promoting vitamins for the treatment of AIDS, which were later ruled illegal by the South African judiciary. Rasnick studied proteases in rats and has also written a book about the aneuploidy theory of cancer.

Rasnick was a prominent member of the AIDS-denialist movement, which claimed that HIV either did not exist, or did not cause AIDS. He claimed that HIV was a harmless "passenger virus" incapable of causing any disease. In 2008, a South African court ruled that the trials conducted by Rath and Rasnick were illegal, and barred them from conducting clinical trials or advertising vitamin supplements in the country.