Brian Andrew Dunning is an American writer and producer who focuses on science and skepticism. He has hosted a weekly podcast, Skeptoid, since 2006, and he is an author of a series of books on the subject of scientific skepticism, some of which are based on the podcast. Skeptoid has been the recipient of several podcast awards such as the Parsec Award. Dunning has also created the Skeptoid.org spin-off video series, inFact, and The Feeding Tube both available on YouTube.

Scientific skepticism or rational skepticism, sometimes referred to as skeptical inquiry, is a position in which one questions the veracity of claims lacking empirical evidence. In practice, the term most commonly refers to the examination of claims and theories that appear to be beyond mainstream science, rather than the routine discussions and challenges among scientists. Scientific skepticism differs from philosophical skepticism, which questions humans' ability to claim any knowledge about the nature of the world and how they perceive it, and the similar but distinct methodological skepticism, which is a systematic process of being skeptical about the truth of one's beliefs.