| Acronym | Definition |
|---|
| HEOS➣Hermes Equity Ownership Services (investment advising; London, UK) |
| HEOS➣Hit Explorer Operating System (software) |
| HEOS➣High Efficiency Optical System (liquid crystal projector) |
| HEOS➣Hanwell and Ealing Operatic Society (UK) |
| HEOS➣Highly Elliptical Orbit Satellite (telecommunications) |
| HEOS➣High Earth Orbit Satellite |
| HEOS➣Hotel Equipment and Operating Services |