| Old Hobartians Association Football Club |
Sports |
OHA |
| operating hazard analysis |
Government |
OHA |
| outside helix angle |
Government |
OHA |
| Office of Hearings and Appeals |
US Government |
OHA |
| Oregon Hunters Association |
Sports |
OHA |
| Ohakea, New Zealand |
Regional Airport Code |
OHA |
| Operation Healing America |
Organization |
OHA |
| Ontario Hospital Association |
Hospital |
OHA |
| Open Handset Alliance |
Messaging |
OHA |
| Orbital Height Adjustment Maneuver |
Space Science |
OHA |
| Oral Hypoglycemic Agent |
Physiology |
OHA |
| Operational Hazard Analysis |
Space Science |
OHA |
| Oregon Health Authority |
Local State |
OHA |
| Oakland Heritage Alliance |
Organization |
OHA |
| Ohio Hospital Association |
Hospital |
OHA |
| Ontario Hockey Association |
Sports |
OHA |
| Overseas Housing Allowance |
Military |
OHA |
| Ohakea |
Airport Code |
OHA |
