The United Bangsamoro Justice Party was organized in 2014 by the Moro Islamic Liberation Front (MILF) as a vehicle to run in future elections.

The MILF, a rebel group which has been fighting for self-determination of the Moros in Mindanao, was anticipating the creation of a Bangsamoro autonomous region by 2016, after securing a peace deal with the Philippine government.

In October 2018, the party announced its intention to campaign for the "yes" vote at the Bangsamoro Autonomous Region creation plebiscite to be held in January and February 2019 and decided not to participate in the May 2019 local elections,[3] even though some members decided to participate as independents or under major parties like the NUP, Lakas and PDP-Laban.

[6] While Chief Minister Murad Ebrahim tagged presidential candidate Isko Moreno as the "incoming president" during a courtesy call during the campaign period,[7] on February 22 the UBJP released a clarification that it is not formally endorsing any candidate.

[8] In April 2022, the UBJP along with Mangudadatu, eventually threw their support for Vice President Leni Robredo for president, with Bangsamoro Interim Chief Minister Murad Ebrahim stating that Robredo and the party are "overwhelmingly compatible" in terms of values and principles in relation to the Bangsamoro.