OHAC
| 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 |