Roland's Riddles
- Choose a difficulty level from easy to very hard; answers are included.
- http://www.darktowercompendium.com/rolandsriddles-levels.html

Usenet rec.puzzles Archive
- A set of various riddles, most with an answer.
- http://rec-puzzles.org/

Traditional Riddles
- Forty traditional riddles with answers.
- http://www.thinks.com/riddles/a1-riddles.htm

Traditional Riddle
- In the Tezoatlán Mixtec Language with Spanish and English translation.
- http://www.sil.org/americas/mexico/mixteca/TEZOATLAN/F003-ADIV-MXB.HTM

Riddle Me, Riddle Me, Riddle Me Ree
- A collection of historial riddles with anwsers and hints on demand.
- http://www.enigmagraphics.com/riddles/

Riddle Archive
- Riddles are listed by categories - classic, letter, ridiculous, and word.
- http://www.justriddlesandmore.com/riddlearchive.html

Random Riddles
- Generates a random riddle-joke on each reload.
- http://www.randomjoke.com/topic/riddles.php

Puzzles by Lewis Carroll
- A decent choice of classic riddles.
- http://www.thinks.com/puzzles/carroll/carroll.htm

Letter Riddles
- Conundrums (wordplay riddles) compiled between 1850 and 1920.
- http://www.justriddlesandmore.com/morelettriddles.html

Law Riddles
- Collection of riddle-jokes about lawyers.
- http://www.vakilno1.com/lawriddles.html

Jokes for the ESL/EFL Classroom - Riddles
- Small collection of riddle-jokes for students of English.
- http://iteslj.org/c/jokes-riddles.html

Greek Spider
- Handful of riddles, including the famous riddle of the Sphynx.
- http://www.greekspider.com/riddle_or_rhyme/

Droodle Archive
- Weekly archived riddles in pictures.
- http://www.droodles.com/

Ancient Riddles
- Five traditional riddles with hints and answers.
- http://www.telacommunications.com/misc/riddles.htm