- Jaded Ape - Original sketch comedy.
- Jamie and Jana Explain It All - The happenings and mishappenings of two college girls and their friends.
- Jan's Jokes - A mixture of jokes from clean to scream, plus links.
- Jason vs The World - One man remembers his past with occasional flashes to the present.
- Javarecon - Ranting and ravings of a caffeine-loving netizen.
- Jay Jay Junior Shabadoo - Personal humor, comment and observations.
- Jebus Fanclub - Fans of most things ending in "bus".
- Jeff's Digital Domain - With a digital belly cam and photo page.
- Jeffthefish - Secret projects, pranks, humor, and science.
- Joe's Completely Useless Website - Weblog, forums and other random and useless topics.
- Joey Zee's Purple Banana - Archive of song parodies, unusual sounds, pictures and animations.
- John Dantzler - Original jokes, many political, with the occasional aphorism thrown in.
- John's Web Site - Jokes, humor and a gallery of personal photos.
- John Mayer Sucks - Pictures, videos and downloads.
- Joker - A collection of games, jokes, and optical illusions.
- Jokes and Pickup Lines - Includes a list of one liners and short jokes.
- Jokes Heaven - Jokes arranged into different categories.
- Jokeville - Collection of jokes on various topics including blondes, gender and jobs.
- Journal of the Canine Universal Nature Training Society - Extracts from humorous records of walks by a group of friends 20 years ago.
- Julie's Verbal Vomit - Jokes, wisdom, trivia, thoughts of the day, and other aids to killing time.
- justmyrant.com - Commentary, opinions, stories and articles on diverse topics.
- The Jerks - Offers the rants of bryx, commentary, what's new and so called x-rated movie reviews.
