HREO
| 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 |