The Gold Coast sailor won gold in the 470 dinghy event at London with Malcolm Page, but will be joined in Rio by Olympic debutant Will Ryan. They are the world No.1-ranked crew with three consecutive world titles (2013, 2014, 2015) before claiming a bronze in Argentina in March.
The former Kim Crow achieved a rare feat in rowing by competing in two events at London 2012 and winning medals in both: bronze in the single sculls and silver in the double sculls (with Brooke Pratley). She has since focused on the single, winning the world title in 2013, taking silver in 2014, then reclaiming the title in 2015.
The track cyclist made his Olympic debut as a teenager in London, as part of the Australian line-up that finished fourth in the team sprint. The 23-year-old has since become a superstar and will get his chance in the individual events. He was runner-up in the sprint at this year's world titles and won gold in the keirin at the 2014 Commonwealth Games.
The Beijing 2008 triathlon bronze medallist and dual world champion (2009, 2010) crashed out on the first lap of the bike leg at London 2012. Suffice to say, the 31-year-old from Moree has unfinished business in Rio where she and Erin Densham become the first Australian triathletes to go to three Games.
The two-time Global Champions Tour winner (2011, 2012) has been Australia's best-performed showjumper at the past two Games and is poised to win our first Olympic medal in the discipline. She and her partner, Barcelona 1992 Olympic gold medallist Jan Tops, run a multi-million dollar equestrian facility in the Netherlands.
The one-time ironman won two medals in sprint canoeing at the 2008 Beijing Olympics - gold in the K1 500m and bronze in the K1 1000m. The now 33-year-old from the Gold Coast has since won world titles in the K1 5000m in 2010, 2013, 2014 and 2015, and the K2 500m in Milan in 2015.
A seventh place in London - the best Olympic result by an Australian female modern pentathlete - as well as another fantastic year in 2015 which included bronze at the World Cup Final and silver at the end-of-year Champion of Champions in Doha - proves the 24-year-old Sydneysider is a genuine contender.
The career of one of Australia's greatest ever hockey player looked over after he was dropped from the Commonwealth Games squad. But the man who scored the winning goal to secure his country its first Olympic gold medal in Athens in 2004 wants another gold in what will be his swansong appearance.
The girl from Laurieton made history when she claimed Australia's first gold medal in women's boxing at the 2014 Commonwealth Games in the lightweight division. The 27-year-old had only take up a career in the ring after suffering a serious knee innjury while playing football.
An outsider, but would be one of the stories of the Games if Australia's only male weightlifter could bring back gold. Sought asylum Down Under after representing Cameroon in the 2006 Melbourne Commonwealth Games. Four years later won gold in Delhi, and will compete in the 94km division in Rio.
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