Visit these sites for a list of upcoming shows:

The International Cat Association (TICA): http://www.ticamembers.org/calendar

Cat Fanciers Association (CFA): http://www.cfainc.org/exhibitors/show-schedule.html

American Cat Fanciers Association (ACFA): http://www.acfacat.com/show_schedule.htm

Governing Council of the Cat Fancy (GCCF): http://www.gccfcats.org/showsnew.html

Federation Internationale Feline (FIFe): http://www.fifeweb.org/wp/shows/shows.asp

World Cat Federation (WCF): http://www.wcf-online.de/en/Shows/index.html

Australian Cat Federation (ACF): http://www.acf.asn.au/Info/ShowDate.html

The Governing Council of the Cat Fancy, Australia and Victoria: http://www.cats.org.au/2006_Shows/2006_shows.html

Cat  Federation  of  Southern  Africa (CFSA): http://www.cfsa.co.za/shows.htm