| Acronym | Definition |
|---|
| IMCO | Instituto Mexicano para la Competitividad (Spanish: Mexican Institute for Competitiveness; Mexico) |
| IMCO | Improved Combustion |
| IMCO | In My Considered Opinion |
| IMCO | Intergovernmental Maritime Consultative Organization (IMO) |
| IMCO | International Mistral Class Organisation |
| IMCO | Committee on Internal Market and Consumer Protection (European Parliament) |
| IMCO | International Maritime College Oman |
| IMCO | I Mean, Come On (chat slang) |
| IMCO | Institut de Marketing et Commerce (French: Institute for Marketing and Trade) |
| IMCO | International Maritime Consultative Board (replaced by IMO) |
| IMCO | In My Clueless Opinion |