HEO
| Acronym | Definition |
|---|---|
| HEO | Heavy Equipment Operator |
| HEO | High Earth Orbit |
| HEO | Higher Executive Officer |
| HEO | High Energy Orbit |
| HEO | Higher Education Organization |
| HEO | Hungarian Energy Office (est. 1994; Hungary) |
| HEO | House of Education Online (forum) |
| HEO | Heterotopic Endochondral Ossification |
| HEO | Human Error Occurrence |
| HEO | Highly-inclined Elliptical Orbit |
| HEO | Health Education Officer |
| HEO | Harbour Empowerment Order (UK) |
| HEO | High Eccentricity Orbit |
| HEO | Highly Elliptical Orbit/ Orbiters |