A HIGH-powered alliance of top Australians has unveiled a new national sporting flag and plans to use it to gatecrash major sporting events.

Ausflag will push for sporting bodies and fans to embrace the green, gold, blue and white flag - still featuring the Southern Cross - and even want it to be raised as the official flag in Olympic Games medal ceremonies.

The not-for-profit group's directors include businesswoman Janet Holmes a Court, former Australian of The Year Patrick McGorry, television journalist Ray Martin and author and former Wallaby Peter FitzSimons.

The new flag is pitched at sporting events only, but the group hopes to use it to help change attitudes and eventually knock the Union Jack off the official flag with another design.

It is pointing at Fiji's recent moves to change its flag and the recent debacle at the London Olympics when Great Britain, Australia and New Zealand all shared the podium looking almost identical with the Union Jack on their flags.

"Britain, Little Britain and Littler Britain," Ausflag chairman and former NSW Nationals MP Robert Webster said.

Mr Webster, who compares the Union Jack's placement to Google letting Apple feature in its advertising, said there was a reluctance to wave the official flag at events and fans instead used inflatable kangaroos.

"This new design is a sporting flag, but our aim eventually is to change the Australian flag," he said.

But the Australian National Flag Association, which supports the current design, said it was a shame that each national day triggered a call for a new flag.

"It's unnecessary," ANFA spokesman Bert Lane said. "Even from a sporting point of view, we have had athletes going to the Olympics every time with this current flag."

Ausflag is calling for sponsors to help bankroll promotions and distribution and plans to roll it out at major international sporting events such as cricket, tennis, rugby league and rugby union.

Martin said the directors all had their own opinions on the best flag design but the end concept had their main points of agreement no Union Jack and the presence of green and gold.

"I'm just tired of Australians wrapping themselves in the Australian flag and all you can see is the Union Jack," he said.

Mrs Holmes a Court said the group had some money but would soon move to a campaign mode.

"It would be lovely if we had a flag of our own that doesn't reference anybody else's flag," she said.