| OHCA | Oregon Historic Cemeteries Association Inc. | 俄勒冈州历史公墓协会。 |
| OHCA | Oregon Health Care Association | 俄勒冈州卫生保健协会 |
| OHCA | Organized Health Care Arrangement | 有组织的医疗保健安排 |
| OHCA | Out of Hospital Cardiac Arrest | 院外心脏骤停 |
| OHCA | Oklahoma Health Care Authority | 俄克拉荷马州卫生保健局 |
| OHCA | Otter Hound Club of America | 美国水獭猎犬俱乐部 |
| OHCA | Oriole Homes Corporation Class A | Oriole Homes公司A级 |