Grnar
- Full Name: Grnar
- Species: Klingon
- Gender: Male
- By 2261: Captain, commanding officer, Klingon Defense Force; IKS Vrot (TOS Novel: The Captain's Oath)
- Death: TCOC2 2261; IKS Vrot (TOS Novel: The Captain's Oath)
- Killed upon self-destruction of vessel (TOS Novel: The Captain's Oath)