Sith Master/Legends

"What is thy bidding, my Master?"

- Darth Vader

Sith Master was a title taken by a Sith if they had an apprentice.

History
In the time of the Jedi Civil War, Darth Malak was sometimes referred to as a Sith Master, being the Dark Lord of the Sith and having an apprentice, Darth Bandon. Headmasters of the Sith Academy on Korriban, Jorak Uln and Uthar Wynn, held this title but it is unknown if they held the title of Sith Lord or not.

In Darth Bane's Sith Order, the Sith Master and the Sith apprentice both held the title Dark Lord of the Sith simultaneously, unlike the earlier tradition of a sole Dark Lord.

In Darth Krayt's Sith Order, the Rule of Two is abolished, but the tradition of master and apprentice is still in use.

Sith Masters of the Sith Empire

 * Simus (Naga Sadow)
 * Naga Sadow (Gav Daragon), (Freedon Nadd)
 * Freedon Nadd (Ommin), (Amanoa), (Warb Null), (Aleema and Satal Keto), (Exar Kun)
 * Ommin (Novar), (Aleema and Satal Keto)
 * Amanoa (Novar)
 * Exar Kun (Ulic Qel-Droma), (Crado), (Nayama Bindo), (Oss Wilum)
 * Darth Revan (Darth Malak)
 * Darth Malak (Darth Bandon), (Bastila Shan)
 * Jorak Uln (Uthar Wynn)
 * Uthar Wynn (Yuthura Ban)
 * Darth Traya (Darth Nihilus), (Darth Sion), (Darth Revan)
 * Darth Nihilus (Visas Marr)
 * Darth Rivan (Darsin)

Known Sith Masters in Darth Bane's Order

 * Darth Bane (Darth Zannah)
 * Darth Zannah
 * Darth Cognus (Darth Millennial)
 * Darth Vectivus
 * Darth Plagueis (Darth Sidious)
 * Darth Sidious (Darth Maul), (Darth Tyranus), (Darth Vader), (Vergere)
 * Darth Vader (Starkiller), (Tao), (Lumiya)

Sith Masters in Lumiya's Sith

 * Lumiya (Flint), (Carnor Jax), (Darth Caedus)
 * Darth Caedus (Tahiri Veila)

Sith Masters in the One Sith

 * Lomi Plo (Morto)
 * Darth Krayt
 * Darth Wyyrlok III
 * Darth Ruyn (Darth Talon)
 * Darth Talon (Cade Skywalker)