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  http://www.lifejacketwearit.com.au/
Transport Northern Territory  http://transport.nt.gov.au/safety/marine
Maritime Safety Queensland  http://www.msq.qld.gov.au/safety/life-jackets.aspx
South Australia Government  South Australian Govt. regulations for PFD's
Marine and Safety Tasmania  http://www.mast.tas.gov.au/domino/mast/mastweb.nsf/v-lu-all/General+Safety~PFDs+(Life+Jackets)?OpenDocument
Transport Safety Victoria  http://www.transportsafety.vic.gov.au/maritime-safety/recreational-maritime/safety-equipment/personal-flotation-devices
Western Australia Department of Transport

http://www.transport.wa.gov.au/imarine/life_jackets.asp

New Zealand Regulations:
 Maritime New Zealand  http://www.maritimenz.govt.nz/Recreational-Boating/Lifejackets/