Klingon faith
- Nontheistic, believing that creator deities were killed by the first Klingons
- Two major afterlifes
- Honored afterlife known as Sto-Vo-Kor (Various)
- Dishonored known as Gre'thor
- The Barge of the Dead transports spirits of the dead to their final destination (ENT Novel: Kobayashi Maru)
- Kahless a revered figure in Klingon culture, often treated as a Messianic prophet
- Not worshiped per se, but honored as an icon and role model
- Teachings are spread via the qeS'a'; guide to honorable behavior (Klingon Art of War; ENT Novel: Live by the Code)
- Largely focused on behavior in combat, but often applied to behavior generally (Klingon Art of War; ENT Novel: Live by the Code)
- First Precept: "Choose your enemies well" (Klingon Art of War; ENT Novel: Live by the Code)
- Third Precept: "Always face your enemy" (Klingon Art of War; ENT Novel: Live by the Code)