"On July 27, 10,500 athletes from over 200 (countries and regions) will march into the London Olympic Stadium for the opening ceremony. Wearing the green and gold with pride will be an Australian team of approximately 400 athletes from almost all of the 38 Olympic disciplines," said the Australian Olympic Committee on its official website on Wednesday.
There are 77 Australian athletes selected so far to compete in boxing, canoe/kayak, sailing, swimming, synchronized swimming and taekwondo.
Although the team announcements and selection events will continue until the end of June,
Nick Green, 2012 Australian Olympic team chef de mission, has already set his eyes on a top five finish in the medal tally in London.
"Australia is well on the way to fielding a strong team that will be ready to take on the rest of the world in London this July," Green said.
"We know we are in for a tough tussle to claim a revered top five spot with hosts and long-time rivals Britain, the strong European contingent headed by Germany and France, and the ever present Japanese."
"But we know, as Aussies, we will never go down without a fight. Our athletes have to continue pushing in these final 100 days to give themselves the best chances of Olympic glory and ensure that we will hear Advance Australia Fair playing throughout the London venues," Green added.
The Australia Olympic Committee believes the country's medal hopes are spread across a diverse range of sports, and expected that high drama and late nights will fill the 16 days of Olympic action for Australian sports fans.
"It is starting to get very exciting with only 100 days until what I am sure will be an amazing Olympic Games put on by London," said Jamie Dwyer, five-time World Hockey Player of the Year, who will travel with the team to London in May for the Olympic test events.
Australia pocketed 14 golds, 15 silvers and 17 bronzes in 2008 Beijing Games, occupying the sixth position in the medal standings.
