Ordo was a planet inhabited by Mandalorians situated in the galaxy. The Archaic Arsenal of Ordo was located on this world, containing an old Mandalorian rally master lance.
During the Imperial Era, when the Galactic Empire held sway, Dryden Vos, a crime lord from the Crimson Dawn organization, had the rally master spear taken to add to his personal collection. Initially, Ordo believed that the inhabitants of Krownest, another world populated by Mandalorians, were responsible for the theft of the artifact, despite the fact that the Scabbard Monument of Krownest was also raided by Dryden Vos around the same period.
The planet known as Ordo made its debut in the new Star Wars canon within the 2018 reference book titled Scum and Villainy: Case Files on the Galaxy's Most Notorious, authored by Pablo Hidalgo. The concept of Ordo existed well before this, having been referenced in the Star Wars: Knights of the Old Republic video game and expanded upon in the Knights of the Old Republic Campaign Guide.