Jediism

Jediism was a pseudo-religion comprising individuals (who, for the most part, were not Force sensitive) who followed the Jedi Code and sought to restore the Jedi Order following the rise of the Galactic Empire. It's members were known as Jediists. Some had political motives, and wished to restore the Galactic Republic under a Jedi-ruled government, believing that integrating the Jedi Code into civil law would result in a perfect utopia.

A retired politician named Gerard Hugoni, who frequently served alongside the Jedi in diplomatic missions in the years leading up to the Clone Wars, was regarded by Imperial Intelligence as being the most influencial organizer of the Jediists.

Overview
The first Jediist movement was formed only months after the Galactic Empire's establishment, and hid in the underlevels on Coruscant as they plotted their rebellion against the Imperial regime and the restoration of the Jedi Order.

Obviously, it was made illegal to follow Jediism and any individual who had a known connection to the religion or had material sympathizing with the Jedi was promptly arrested and prosecuted. Many Jediists harbored Jedi who survived Order 66, and some even banded together into smaller resistance movements such as the Avengers of the Order, most of which operating in the Corusca sector as terrorists and insurgents. Many of these Jediist extremists ironically abandoned the Jedi Code in their operations, though still sympathized with the Jedi and wished to restore the Order; some surviving Jedi even fought alongside these extremists. After the Avengers of the Order were dismantled during a raid on their stronghold by Imperial stormtroopers and mass arrests resulting in the incarceration of over 500,000 Jediists (as well as the assassination of Gerard Hugoni by members of the Imperial Security Bureau), the "religion" gradually fell into obscurity by the time of the Galactic Civil War, though many Jediists evaded imprisonment and went on to fight for the Rebel Alliance.

The Jediists were considered predecessors to the Church of the Force.