| Acronym | Definition |
|---|
| HNM➣Happy New Month |
| HNM➣Home Network Manager |
| HNM➣Hungarian National Museum (Budapest, Hungary) |
| HNM➣Holy Name of Mary (various organizations) |
| HNM➣Harris Network Management (Harris Communications) |
| HNM➣Hyper Notorious Monster (Final Fantasy gaming) |
| HNM➣High-level Notorious Monster (Final Fantasy gaming) |
| HNM➣Housing Needs Manager (UK) |