Paradoxes - Brain Teasers
- Presents well-known paradoxes, including liar, double liar, barber, and lazy-bones paradox. Also contains sophisms, and short paradoxical sentences from life.
- http://hlavolamy.szm.sk/brainteasers/paradoxes.htm

Puzzles: Famous Paradoxes
- This page offers over 20 fun and weird paradoxes.
- http://www.brainteaser-world.com/puzzles/paradoxes/paradoxes-archives.htm

LogicalParadoxes.Info
- A collection of proofs leading to absurd conclusions.
- http://www.logicalparadoxes.info/

Paradox or Fallacy
- A discussion on paradox, with the goal being to determine what is paradox and what is fallacy.
- http://www.paradoxes.info/

Curry's Paradox
- Discussion of a semantic paradox due to Haskell B. Curry; from the Stanford Encyclopedia by J. C. Beall.
- http://plato.stanford.edu/entries/curry-paradox/

Zeno's Paradox of the Tortoise
- An article in the Platonic Realms.
- http://www.mathacademy.com/pr/prime/articles/zeno_tort/

Paradoxes and Dilemmas
- Common paradoxes and dilemmas, particularly of the social type: the Voting Paradox, Prisoner's Dilemma, Newcomb's Paradox, Unexpected Hanging, Execution Paradox, and the Self-Amendment Paradox.
- http://perspicuity.net/paradox/paradox.html

The World of Paradox
- Site containing some well-known paradoxes, together with a discussion of each.
- http://sps.nus.edu.sg/~ngbeesan/main.html

The Berry Paradox and Godel's Incompleteness Theorem
- Transcript of a lecture by Gregory Chaitin on how the Berry Paradox ("the smallest number that needs at least n words to specify it, where n is large") illuminates Godel's Incompleteness Theorem.
- http://www.cs.auckland.ac.nz/CDMTCS/chaitin/unm2.html

Zeno's Coffeehouse
- Site maintained by Ron Barnette, which regularly proposes paradoxes in common sense reasoning and invites and publishes responses to them.
- http://www.valdosta.edu/~rbarnett/phi/zeno.html

Sorites Paradox
- Article in the Stanford Encyclopaedia of Philosophy, by Dominic Hyde.
- http://plato.stanford.edu/entries/sorites-paradox/

Some Endeavours at Synthesising a Solution to the Sorites.
- An introductory survey by Shawn Raylston.
- http://www.ul.ie/~philos/vol3/sorites.html

Russell's Paradox
- Entry in the Stanford Encyclopaedia of Philosophy by A. D. Irvine.
- http://plato.stanford.edu/entries/russell-paradox/

The Epimenides Paradox
- An analysis of several attempted resolutions of the Epimenides Paradox (also known as the Liar Paradox), showing how they all fail.
- http://www.ocf.berkeley.edu/~sjblatt/notes/nottrue.html