HNO
# HNO

HNO may refer to:

* Croatian National Committee (Hrvatski Narodni Odbor), an organization founded by the Ustaša Branimir Jelić
* Croatian National Resistance (Hrvatski narodni otpor), an organization founded by the Ustaša Maks Luburić
* Hockey Northwestern Ontario
* Nitroxyl
* hno, ISO 639-3 code for the Northern Hindko language of Pakistan
