The A-League's new club for the 2020-21 season will be called Macarthur FC.
The announcement was made on Wednesday, with the name decided on after extensive community consultation.
The third Sydney-based team's colours will be black, white and ochre, and their logo will include a bull.
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"Like the club, [the colours] are authentically fun, tribal, proud, hardworking and inclusive," Macarthur FC announced in a statement.
"Ochre is included to represent one of the traditional colours for the local Dharawal Aboriginal people on whose land the Macarthur region sits.
"The logo includes a bull which is demonstrative of the club's physical power as well as a tilt to history when a runaway herd of cattle was discovered in the region in 1795.
"[The] three stars of the Southern Cross symbolise football's links with the grassroots football community, the National Premier League and the A-League."
Matildas coach Ante Milicic will take up the reins of the third Sydney-based club after guiding the Australian women's team through this year's World Cup and next year's Tokyo 2020 Olympics, when his national contract expires.
"The timing was right for me," said Milicic, who relished to challenge posed with a start-up club.
Previously a Socceroos assistant coach, 45-year-old Milicic believed his international experience, including World Cups, would stand him in good stead at the helm of an A-League team.
The Macarthur region has also been the childhood home of at least 20 Socceroos and 10 Matildas players with a combined games total of 600 for the Socceroos and 433 for the Matildas.
Five men and five women from the area have played in at least one World Cup, with Brett Emerton and Heather Garriock each having reached a century of national team appearances.