| Acronym | Definition |
|---|
| OHAC➣Orchard Hills Athletic Club (Ann Arbor, MI and Lancaster, MA) |
| OHAC➣O'Herlihy Access Consultancy (Ireland) |
| OHAC➣Oregon Health Action Campaign (est. 1985) |
| OHAC➣Own House and Car (personal ads) |
| OHAC➣Occupational Health Advisory Committee (United Kingdom) |
| OHAC➣Ohio Housing Authorities Conference |
| OHAC➣Oriental Healing Arts Center (Anchorage, Alaska) |
| OHAC➣Open High Availabililty Cluster |