Logical fallacies are presented with detailed explanations, multiple examples, and tips on avoiding them. Fallacies are organized by topic and alphabetically.

Site maintained by Stephen Downes, which catalogues over 70 logical fallacies together with examples and the criteria for determining when they have been committed.

Dr. Charles Ess, professor of philosophy and religion, explains and gives examples of logical fallacies.

Article in the Stanford Encyclopaedia of Philosophy, by Leo Groarke.

Article by Paul Tomassi discussing the application of logical reasoning in medical diagnostic. Appeared in Minerva.

Atheism Web's guide to logic and fallacies in practical reasoning.

An encyclopedia of errors of reasoning. Explanations and examples of common logical mistakes.

Entertaining article by Peter Suber discussing the rationality of a certain kind of rhetorical blocking strategy.

A short article on informal fallacies from the Platonic Realms Interactive Mathematics Encyclopedia.

Discusses various propaganda techniques, provides contemporary examples of their use, and proposes strategies of mental self-defense.

Offers an introduction to critical thinking whose main content is the description of fallacies, offering examples in daily life.

Explains and gives examples of logical fallacies from the media and everyday life, with references to sources.

42 informal logical fallacies explained by Dr. Michael C. Labossiere, including examples.

Emotional appeals, fallacies, manipulations, disinformation, misdirection, political correctness and the nature of truth. How some people get others to agree with their point of view, give them what they want, do what they ask and buy what they are selling.

A brief introduction to informal logic and argument.