| OMGA | Oregon Master Gardener Association | 俄勒冈州园艺大师协会 |
| OMGA | Oregon Meadowfoam Growers Association | 俄勒冈州草地泡沫种植者协会 |
| OMGA | Ohio Meat Goat Association | 俄亥俄肉羊协会 |
| OMGA | Oklahoma Meat Goat Association | 俄克拉何马肉羊协会 |
| OMGA | Obstetric Medicine Group of Australasia | 澳大拉西亚产科医学组 |
| OMGA | Omega Research, Inc. | 欧米茄研究公司。 |
| OMGA | Operations Management Ground Application | 运营管理地面应用 |
| OMGA | Oh My Giddy Aunt | 哦，我的吉迪阿姨 |