Official Name for the Civil war that tore apart the Setting of the Role Playing Game Traveller on the advent of the new ruleset called Megatraveller.
The Rebellion started when Emperor Strephon Alkhalikoi was assassinated by Archduke Dulinor of Iliesh, whom he himself appointed in a move originally intended to strengthen the Third Imperium.
Unable to hold on to the Capital, Dulinor was forced to flee back to Dlan, while the vacuum of power his action created led to the formation of many factions struggling for the Iridium Throne thus shattering the Imperium.
The Rebellion setting officially ended with the advent of Traveller: The New Era which was set 84 years after the advent of the Rebellion, and 70 years after the outbreak of self-aware computer virus which effectively had flattened civilization in all of known space and thus made all events of the rebellion seem futile in retrospect.
The main storyline of the Rebellion was later collected and summarized in the TNE sourcebook "Survival Margin", which was the last MegaTraveller and first New Era supplement.