Australia National Marine Safety Committee:
General Description of PFD Standards in Australia  October 2013: This link is now defunct. Please stay tuned for an update to our PFD Standards Page coming soon.
Australia State Regulations - Each state in Australia has different regulations for PFD's so please refer to the appropriate rules for your state:
New South Wales Transport Maritime
Transport Northern Territory
Maritime Safety Queensland
South Australia Government  South Australian Govt. regulations for PFD's
Marine and Safety Tasmania
Transport Safety Victoria
Western Australia Department of Transport

New Zealand Regulations:
 Maritime New Zealand