Ultimate Party is a recurring professional wrestling event promoted by DDT Pro-Wrestling (DDT). Originally held by DDT as an independent promotion in 2019, it has since been held by CyberFight as a DDT-branded event. The event is usually held in November and airs as an internet pay-per-view (iPPV) on CyberFight's streaming service Wrestle Universe and on AbemaTV.
In 2019, Ultimate Party was produced by DDT Pro-Wrestling, an independent promotion founded in 1997 by Shintaro Muto and Pro Wrestling Crusaders alumni Kyohei Mikami, Kazushige Nosawa and Sanshiro Takagi. In 2020, DDT and its subsidiaries merged with Pro Wrestling Noah into a new company called CyberFight owned by the digital advertising company CyberAgent, with DDT and Noah persisting as separate brands under the CyberFight umbrella. Ultimate Party has since been held as a DDT-branded event.