| Acronym | Definition |
|---|
| RHG | Royal Horse Guards |
| RHG | Roadhouse Grill (restaurant chain) |
| RHG | Red Hot Go (Australian idiom) |
| RHG | Relative Heat Gain |
| RHG | Revolution Health Group |
| RHG | Reproductive Health Gateway |
| RHG | Real Hotel Group (UK) |
| RHG | Roughhead Grenadier (FAO species name code ) |
| RHG | Relation Hôte Greffon (French: Graft Host Relationship) |
| RHG | Respect Honor Glory (America's Army gaming clan) |
| RHG | Resort Holiday Group |
| RHG | Rattlehead Games (Boonville, NC) |
| RHG | Receding Horizon Guidance Law |
| RHG | Residential Home Gateway (Internet service) |
| RHG | Raimondi Horticultural Group, Inc. (New Jersey) |
| RHG | Rock Hard Gladiator (website game) |