Jan-Ja
- Jan-Ja is a location from the Marvel portion of the Generation 1 continuity family.

Jan-Ja is the location of a historically significant battle in which Optimus Prime refused to surrender to superior Decepticon forces and instead led a charge to victory.
Fiction
Marvel Comics continuity
Marvel The Transformers comics
Not long before Optimus Prime and his crew launched from Cybertron in the Ark to clear threating asteroids, he was defending the Jan-Ja in what seemed to be a doomed attempt to keep the Decepticons from taking Iacon. One of Prime's officers urged Prime to surrender. Prime told him to get out the white flag. Relieved, the officer unfurled it only to be shocked when Prime ordered him to bind his wound with it. With that, Prime ordered a charge, which was apparently successful in protecting Iacon. Surrender!
3H comics
The Chronarchitect, when trying to temporally compose himself, was at Jan-Ja during Optimus Prime's charge. Covenant

