The 37-year old 23-time grand slam champion will be gunning for a record-equalling 24th grand slam title and her seventh at Melbourne.
The 37-year-old tennis star, who is now ranked No. 16 among women, was named one of the top 102 in her sport and has since committed to competing in January's Melbourne event, the first of four annual Grand Slam tourneys. The 2017 Australian Open win was the 23rd individual Grand Slam title for Williams. She first won it against her older sister, Venus, back in 2003, and has added six other Open victories since then.
The top Croatian tennis players will fight in the first Grand Slam tournament of the 2019 season - the Australian Open.
Before heading to Australia for Melbourne Park title at the Hopman Cup in Perth, Serena Williams will play an exhibition match in Abu Dhabi in the last week of the year. The tournament's leading sponsor is Kia, who is the main sponsor of the tournament from previous years too.
Roger Federer is the two-time men's singles champion, who will defend his title from 2017 and 2018.
The 2019 Australian Open is considered the strongest tournament yet as officials could not recall the last time both the men's and women's top 100 players would participate in the opening tournament.
The only way he can gain some seeding protection for the 2019 Open - which starts on January 14 - is by defending his Brisbane International crown and hoping for some late withdrawals.
Andy Murray will be included in the men's draw alongside Roger Federer, Rafael Nadal and Novak Djokovic.