NJCAA: Illinois Region XXIV
- Governing body for junior and community college athletic programs for schools located in central and southern Illinois. Features information and links to member schools.
- http://www.njcaa.org/region1.cfm?regionid=24

American Camping Association (ACA) Illinois Section
- A community of camp professionals focused on enriching the lives of children and adults through the summer camp experience. Represents over 100 affiliated camps and features news, resources, events guide, and contact details.
- http://www.acail.org/

Illinois Highpower
- Competing in highpower rifle matches throughout the state. Features tournament calendar, and results archive of past events, locations of ranges, photo gallery and membership information.
- http://www.illinoishighpower.org/

2002 ICMOA Dart, Pool & Golf Tournament
- Annual indoor table and video games tournament featuring news, dates and registration, qualifying rules and classifications, prize money, and contacts. Sponsored by the Illinois Coin Operated Machine Operators Association.
- http://www.icmoa.org/Tournament/tourmain_2002.htm

Illinois Mountain Bike Coalition
- One stop information source for mountain biking in the state. Complete list of trails, events, shops, links, weather, and message board.
- http://www.illinoismtb.com/

ISRA - Illinois State Racquetball Association
- Information on membership, schedule, mailing list, rankings and junior clinics.
- http://www.illinoisracquetball.com/

Illinois Athletic Trainers Association
- Seeks to improve the quality of athletic health care; features membership benefits, news, educational program, hall of fame, the IATA Journal, links and downloads.
- http://www.illinoisathletictrainers.org/