| RHM | Rahsia Hidup Mewah 
| Others |
| RHM | Raine and Horne Mosman
| Others |
| RHM | Raised Horizontal (pavement) Markers
| Others |
| RHM | Rank Hovis McDougall
| Others |
| RHM | Rapid Hand Movement
| Others |
| RHM | Real House Maverick
| Others |
| RHM | Red Hat Messaging
| Others |
| RHM | Red Hat Middleware
| Others |
| RHM | Red head mania
| Others |
| RHM | Red Hot Mama
| Others |
| RHM | Red Hot Metal
| Others |
| RHM | Regimental Havildar Major
| Others |
| RHM | Reglamento de la Ley de Hipoteca mobiliaria y Prenda
| Others |
| RHM | Reiki Healing Mudra
| Others |
| RHM | Relative Humidity Monitor
| Others |
| RHM | Relaxed Hair Mentality
| Others |
| RHM | Remains Handling Model
| Others |
| RHM | Reproductive Health Matters
| Others |
| RHM | Restaurant, Hotel, and Convention Management
| Others |
| RHM | Restoration House Ministries
| Others |
| RHM | Rheometric Scientific
| Others |
| RHM | Riches Hawley Mikhail
| Others |
| RHM | Right Hand Man
| Others |
| RHM | Right Hemisphere material
| Others |
| RHM | Robert Hunter Middleton
| Others |
| RHM | Roentgen Hour Meter
| Others |
| RHM | Romania Handicapped Ministries
| Others |
| RHM | Ron Hutchcraft Ministries
| Others |
| RHM | Roto Hydramatic
| Others |
| RHM | Rowan Helping Ministries
| Others |
| RHM | Rubeus Hagrid Monday
| Others |