Circus Record and Documentation Center: Programs, books, news, adresses, links, ads, and discussion group.
Circus Web: History, lore, and links to circuses and organizations.
Circus World Museum: The Circus World Museum salutes over 200 years of the American circus at the original winter quarters of the Ringling Bros. Schedules, shopping, and tickets.
Circusland.com: Includes photo galleries, videos, articles, glossary, forum, performer database, and merchandise. [English/Russian]
International Circus Festival: Annual professional competition held in Budapest, Hungary. Includes previous results, including photographs and profiles of performers.
So You Wanna Join the Circus?: Full-length article tells you exactly how to join the circus.
Sounds of the Circus: Discography of music from the golden age of the American circus performed by The South Shore Circus Concert Band.
Yahoo Groups: Circus Arts: Discussion group for amateurs and professionals.