Through out their existence, the Sith Order established several Empires:

• Adas's Sith Empire, established by the Sith of Korriban following their victory over the invading Rakata and relocation to neighbor planet Ziost.
• The "First" Sith Empire; founded by Dark Jedi expelled from the Galactic Republic.
• The Sith Empire, better known as the Brotherhood of the Sith, established by Exar Kun during the Great Sith War.
• The Sith Empire established by Darth Revan during the Jedi Civil War.
• The Sith Triumvirate formed from the survivors of Revan's Empire by Darth Traya, Darth Nihilus and Darth Sion.
• The Sith Empire established by the Sith Lord Vitiate in 4,980 BBY from the remains of the "First" Sith Empire after the Great Hyperspace War. This Empire fought the Republic during the First and Second Great Galactic Wars, and the Cold War between the two wars.
• The New Sith Empire established by Darth Ruin during the New Sith Wars.
• The Galactic Empire, established and ruled by the Sith (Darth Sidious and Darth Vader), but generally not counted as a Sith Empire.
• The Galactic Federation of Free Alliances under Darth Caedus, though like the Galactic Empire, not counted as a Sith Empire.
• The One Sith's Galactic Empire established by Darth Krayt following the end of the Sith–Imperial War, not to be confused with Emperor Fel's Galactic Empire.

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