Sopek
- Full name: Sopek
- Also known as: Ch'uihv of Saith (ENT Novel: The Good That Men Do)
- Species: Vulcan
- Gender: Male
- By 2150: Agent, V'Shar (ENT Novel: Kobayashi Maru)
- Agent for "many years" by Kobayashi Maru
- 2153: Captain, commanding officer, Vulcan Defense Force; Ni'Var (ENT: "Shadows of P'Jem")
- Falsified death in order to begin operating undercover as Romulan dissident Ch'uihv of Saith
- By March 2155: Rose to leader of the Ejhoi Ormiin (ENT Novel: The Good That Men Do)