KNM may refer to:
- Kongelig Norsk Marine, a ship prefix of the Royal Norwegian Navy
- Konami (NYSE: KNM), a Japanese developer and publisher of games
- Kannazuki no Miko, a 2004 yuri, magical girl, and mecha manga and anime
- Knights and Merchants, a medieval themed computer game
- Kerala Nadvathul Mujahideen, a Sunni Islam Salafi movement in Kerala State, India.
- Royal Dutch Mint, abbreviated in Dutch as KNM