| A Collection of Quant Riddles: Logical and lateral type thinking riddles with some answers. |
| Able2Know: A public forum for riddlers and riddle lovers in several topics. |
| Amusements in Mathematics: Riddles by Henry Ernest Dudeney. |
| Brain Teasers: Classic puzzles and riddles sorted in several sections - general logic, weighing puzzles, Einstein's riddles, number sequences, and crossing river. |
| Daily Outrageous Rebus Riddle Contest: Cartoon rebus riddles posted daily. Answers are submitted by e-mail. |
| DiMensIoNS: Riddles abound, odd and complex riddles, brain teasers. Explained meanings and complete answers. |
| Fleabusters' Kids Fun Page: Riddles with responses as well as unanswered. |
| Funny Riddles: Categorized collection. |
| Harder Riddles: Some harder riddles marked with stars to identify the degree of difficulty of each riddle. Accompanied with answers. |
| Historiddle: Collection of free internet puzzles, riddles and brain teasers based on the history of the 20th century. |
| HumorShack: Archive of cartoons, riddles with answers and a free mailinglist. |
| Jason's Puzzler Page: Small collection of riddles with answers. |
| MindBreakers: Since 1995 free puzzles, riddles, brain teasers, quizes, and games. Fascinating riddles and multipart puzzles. |
| OnlyRiddles.com: Searchable database of riddles with answers. Accepts visitor submissions and offers an RSS feed. |
| Opossum Sally's Goldenmean: Collections of jokes and riddles from penpals. |
| Pack 114 Fun Pages: A collection of ten trivial riddles. |
| PickandSend: A collection of brain teasers, riddles, and logic puzzles. Answers on highlight, sending feature. |
| Puzzles & Riddles: IT experts provide answers to some of the most demanding puzzles and riddles. |
| Puzzles by Sam Loyd: Ten puzzles from a collection that appeared in various newspapers and magazines over the previous fifty years. |
| Random Riddles: A collection of submitted riddles. |
| Riddle of the Week: Just one question a week. Answer on e-mail. |
| Riddle Planet: A contest with twenty-five riddles per each classified round with a money prize for the first person to solve them all. |
| Riddle-Poems, and How to Make Them: The gentle and literate art of the rhyming riddle. |
| RiddleAday: Riddles, puzzles and brain teasers to challenge and entertain all ages. [E-mail lists] |
| Riddles: Some challenging riddles to solve. Answers below each of them. |
| Riddles at Funtestiq: Interesting riddles served to you automatically. |
| Riddles.com: Large riddle database categorized by difficulty. Includes a search feature. |
| Scatty.com: Riddles: Collection, sorted into lots of categories to amuse, puzzle and test. |
| Spreadsheet Jokes: A bunch of riddles on spreadsheet programs. |
| Stumpers: Math and word riddles, which were created by students in Mrs. Henson's classroom. Includes answers. |
| Sureshot Riddles: A fun and challenging collection of logic riddles and sequences. |
| The Masters of Logic: The difficulty of the logic puzzles increases until almost unsolvable. The list "The Masters of Logic" shows the solutions. |
| The Riddle Contest: An online contest for riddle lovers. Expect to encounter a broad array of different puzzle types as well. |
| Tree Riddle: An old multiple riddle. Identify 65 names of trees. |
| Tyfani's Weekly Riddle: Offers mad gab-type riddles with solutions and archives. |
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