Dominion 7.5 in Osaka-jo Hall was a professional wrestling pay-per-view (PPV) event promoted by New Japan Pro-Wrestling (NJPW). The event took place on July 5, 2015, in Osaka, Osaka, at the Osaka-jō Hall. The event featured ten matches (including one match on the pre-show) with all six of NJPW's championships on the line, main evented by an IWGP Heavyweight Championship match between champion A.J. Styles and challenger Kazuchika Okada. In addition to airing worldwide through NJPW's internet streaming site, NJPW World, the event also aired in Japan as a regular PPV through SKY PerfecTV!. The event marked NJPW's first show in Osaka-jō Hall in 21 years and drew 11,400 fans to the arena. This was the seventh event under the Dominion name and the first to take place in July.