The 2025 Grand Slam Australia was a professional wrestling television special produced by the American company All Elite Wrestling (AEW). It was the fifth Grand Slam event and took place on Saturday, February 15, 2025, at the Brisbane Entertainment Centre in Brisbane, Queensland, Australia. The special was simulcast on TNT and Max in the United States, airing on tape delay later that same day in place of AEW's regular Saturday night program, Collision. This was the first expansion of AEW's Grand Slam brand of events, which previously aired as special episodes of AEW's weekly programs, as well as AEW's first event in Australia. A second Grand Slam in 2025 was subsequently scheduled for June as Grand Slam Mexico.
Five matches were contested at the event. In the main event, Australia's own "Timeless" Toni Storm defeated Mariah May to win her record-setting fourth AEW Women's World Championship. In another prominent match, which was the opening bout, Will Ospreay and Kenny Omega defeated The Don Callis Family (Kyle Fletcher and Konosuke Takeshita).