| Acronym | Definition |
|---|
| HMM | Hidden Markov Model |
| HMM | Heroes of Might and Magic (gaming) |
| HMM | Marine Medium Helicopter Squadron (US DoD) |
| HMM | Hardware Maintenance Manual |
| HMM | Hex Mica Module |
| HMM | Hazardous Materials Management |
| HMM | Heavy Metal Maniacs |
| HMM | Health Ministers Meeting (various organizations) |
| HMM | Home Management of Malaria (health strategy) |
| HMM | Hyundai Merchant Marine Co. |
| HMM | Hand Maid May (anime) |
| HMM | Hotel/Motel Management (hospitality education) |
| HMM | Heidelberger Medical Marketing (Heidelberg; Germany) |
| HMM | Helicopter Marine Medium |
| HMM | Heavy Magic Missile (Tibia game) |
| HMM | Hand Maid Mai (anime) |
| HMM | Housemate Match (Atlanta, Georgia) |
| HMM | Hex MICA Module (Cisco; contains 6 modems) |
| HMM | Half Molecule Model |
| HMM | l'Harmonie Municipale de Monthermé |
| HMM | Harmonie municipale de Mâcon |
| HMM | Hub Management Module (Black Box) |
| HMM | Heavy Meromysin |
| HMM | Hatch Mott MacDonald Group, Inc. (engineering consulting firm; Millburn, NJ) |