Australian TeX Gathering
This gathering is in its very infancy. Australia has a CTAN mirror at UNSW ctan.unsw.edu.au. UNSW is also where I started using TeX for my undergraduate thesis.
I'd love to hear from anyone who has more information about the use of TeX in Australia. Please take advantage of the form below. Of course, if anyone is interested in becoming involved in an Australian TeX User Group I'd love to hear from you too.