| IMAO | International Maritime Arbitration Organisation | 国际海事仲裁组织 |
| IMAO | In My Anal Opinion | 在我的分析意见中 |
| IMAO | Inhibidores de la Monoamino Oxidasa (Spanish: Monoamine Oxidase Inhibitor) | 单胺氧化酶抑制剂(西班牙语:单胺氧化酶抑制物) |
| IMAO | In My Armed Opinion | 在我的武装意见中 |
| IMAO | International Monkey Assassination Organization | 国际猴子刺杀组织 |
| IMAO | Ill Make An Opinion | 我会发表意见 |
| IMAO | I'll Make An Opinion | 我会做一个意见 |
| IMAO | Internet Masking Actual Operation | Internet掩蔽实际操作 |
| IMAO | I Am Also One | 我也是一个 |
| IMAO | In My Arrogant Opinion | 以我傲慢的观点 |