Betrayers of the Truth: Fraud and Deceit in the Halls of Science is a book by William Broad and Nicholas Wade, published in 1982 by Simon & Schuster in New York, and subsequently (1983) also by Century Publishing in London, and with a simplified subtitle as Betrayers of the Truth: Fraud and Deceit in Science by Oxford University Press in 1985.

The book is a critique of some widely held beliefs about the nature of science and the scientific process.

Broad and Wade argue that the conventional wisdom that science is a strictly logical process, with objectivity the essence of scientist's attitudes, errors being speedily corrected by rigorous peer scrutiny and experiment replication, is a mythical ideal.

In the acquisition of knowledge, scientists are not guided by logic and objectivity alone, but also by such nonrational factors as rhetoric, propaganda, and personal prejudice.

[1] The authors present a series of case studies associated with the conduct of scientific research, from the manipulation of results to the total fabrication of whole experiments.