When I first created this index in the mid-1990s, dance web pages frequently appeared and disappeared without much warning. Nowadays, most well-established dance series have created a fairly stable space on the web and this page may be less needed than it once was.
Several people maintain national or regional indices of dances.
Be sure to check several different indices if you cannot immediately find what you are looking for. If you find schedule information that is not maintained by the dance organizers themselves, it is generally a good idea to call ahead or send email before making plans. Kiran Wagle's index Folk Dancing in the Netherlands has an extensive set of links to all sorts of folk dancing in the Netherlands and beyond. This is probably the best place to start if you're looking for dancing in continental Europe. Folk Dancing in Australia lists all sorts of folk dancing Down Under.