KMN may refer to:
- Order of the Defender of the Realm, a Malaysian federal award
- Kamina Airport, the IATA code KMN
- kmn, the ISO 639-3 code for Awtuw language
- kmn, a Finnish drummer and musician
- KMN, the postal code of Kemmuna (Comino)
- Kunming South railway station, the pingyin code KMN