| Acronym | Definition |
|---|
| HREO➣Hamptons Real Estate Online |
| HREO➣Heavy Rare Earth Oxide |
| HREO➣Human Rights and Equity Office |
| HREO➣Human Relations/Equal Opportunity (US DoD) |
| HREO➣Hawaii Real Estate Online |
| HREO➣Hyperemesis Research and Education Organization |
| HREO➣Human Relations Education Officer |
| HREO➣Human Rights Education and Outreach |