Cameron Norrie, Dan Evans and Katie Boulter will all be part of the Great Britain team for the 2024 United Cup.
Fran Jones and doubles players Neal Skupski and Maia Lumsden complete the British team for the 18-nation mixed event held in Sydney and Perth.
Men's world number one Novak Djokovic and women's world number two Iga Swiatek have also entered.
The United States won the inaugural tournament, which was played in January.
Nine of the world's top 20 men and five of the world's top 10 women will feature including Alexander Zverev, Casper Ruud, Wimbledon winner Marketa Vondrousova and former world number one Angelique Kerber, who could be making her first appearance since having a baby.