Kran
- Full Name: Kran
- Species: Klingon
- Gender: Male
- c.2250: Captain, commanding officer, Klingon Defense Force (TOS Novel: Errand of Vengeance: Killing Blow)
- By 2266: Captain, commanding officer, Klingon Defense Force; IKS d'k tahg (TOS Novel: Errand of Vengeance: Killing Blow)
- Death: March 31, 2266; IKS d'k tahg (TOS Novel: Errand of Vengeance: Killing Blow)
- Killed in challenge by first officer Klak (TOS Novel: Errand of Vengeance: Killing Blow)