Ranjit Kumar Chandra (रंजीत कुमार चंद्रा; born February 2, 1938) is an Indian-born Canadian researcher and self-proclaimed "father of nutritional immunology" who committed scientific and health care fraud. Chandra's misconduct was the subject of a 2006 documentary by the Canadian Broadcasting Corporation (CBC). A libel trial in July 2015, concluded that the allegations of fraud against Chandra were truthful; he was ordered to pay $1.6 million to cover CBC's legal fees, and later that year was stripped of his membership in the Order of Canada. As of 2020, four of Chandra's research publications have been retracted, and one has been corrected.