Wiktionary
hnn
interj. Indicating thinking or pondering.
Wikipedia
HNN
HNN may refer to:
- HLN (TV channel), an American television news channel
- HNN extension, in combinatorial group theory
- Hanunó'o language, spoken in the Pilippines
- Hawaii News Now, a television program
- History News Network, a project of the Center for History and New Media at George Mason University