- AskMen.com - Sports Officiating - Sports business article outlining the career opportunities in officiating.
- EveryRule.com - Directory of rules by sport.
- International Council for Coach Education - ICCE is a not-for-profit, international organization with the mission of promoting coaching as an internationally accepted profession.
- National Association of Sports Officials (NASO) - Organization dedicated to officiating with membership at all levels and types of sport.
- Officiating.com - Officiating news, links, violations, fouls, mechanics, philosophy, rules, and discussion boards.
- Ohio Referee - Sports officials and organizations can have an online presence that is database driven and customizable.
- Referee/Umpire Home Page - Information about officiating camps, state and local associations, and numerous message boards for baseball, basketball, football, softball, hockey, volleyball, amateur wrestling, soccer, and track and field.
- Referee Magazine - Contains sample articles, editorial archives, contact, advertising, and subscription information.
- The Official Public Address Announcer Web Site - Information for PA announcers, including features on other announcers, talent bank listings, message board and articles.
- The Referee Forum - Discussion board for UK football referees. Includes bulletin boards, polls and quizzes for and about football referees.
- The Worst Ref Calls - Discussion of bad referee calls and non-calls in football, basketball, baseball, and soccer. The home site shows short video clips of bad ref or referee calls.
- Baseball@ (31)
- Basketball@ (28)
- Football, American@ (38)
- Ice Hockey@ (21)
- Rugby Union@ (1)
- Soccer@ (13)
- Volleyball@ (7)
- Water Polo@ (2)
