Black Knight may refer to:
- Kinshra, the organisation commonly known as the Black Knights
- Black Knight, the monster
- Black Knight (Dominion Tower)
- Black Knight (The Void Stares Back), an NPC encountered during The Void Stares Back quest
- Black Knight (Invasion of Falador), monsters encountered during the Invasion of Falador event
- Black Knight (The Battle of Lumbridge), an NPC featured in the pre-release of the Battle of Lumbridge
- Black Knight (Heart of Gielinor), an enemy found in the Heart of Gielinor
- Tiny Black Knight