Knife can refer to the following:
- Leaning on the Knife - the forty-eighth chapter of Lord of Chaos.
- Knife of Dreams - the eleventh book in the Wheel of Time.
- Marriage knife - a part of Ebou Dari custom and fashion.
- The Marriage Knife - a small inn in Altara.
- Sovin Nai - an Aiel warrior society, meaning "Knife Hands" in the Old Tongue.