The Adelaide International is a tennis tournament held annually in Adelaide, Australia on hard courts. The tournament was introduced in 2020, in both the ATP and WTA calendars, and takes place in January, as a preparatory event for the first Grand Slam of the tennis season, the Australian Open.

When the Brisbane International was established in 2009, Adelaide lost the organization of its historic ATP tournament, the South Australian Open, which was already held before the Open era, ending up organizing only the World Tennis Challenge, an exhibition event played the week before the Australian Open.

In 2019, the announcement of the establishment of the ATP Cup, a team competition held in various cities, led to the cancellation of the Brisbane and Sydney tournaments, leaving room on the calendar for a new competition to be included before the Australian Grand Slam. In February 2019, the Australian Government announced a $10 million investment to build a canopy at the Memorial Drive Tennis Center after securing a five-year contract with Tennis Australia to stage a new international event.

The tournament was then launched the following year as a combined ATP 250 and WTA Premier event. The 2021 men's edition is moved to Melbourne due to the COVID-19 pandemic, takes the name Great Ocean Road Open and is held at the same venue as the Australian Open the week before. While the women's one is played in February at the Memorial Drive Tennis Center after the Australian Open.