| Acronym | Definition |
|---|
| IMAC | Internet Macintosh |
| IMAC | International Modal Analysis Conference |
| IMAC | Ingenious Media Active Capital (UK) |
| IMAC | Internet Macintosh (Apple) |
| IMAC | Immobilized Metal Ion Affinity Chromatography |
| IMAC | International Miniature Aerobatic Club |
| IMAC | Identity Management and Access Control (cybersecurity) |
| IMAC | Image Management and Communication (digital imaging) |
| IMAC | International Marine Aquarium Conference |
| IMAC | Innovation Management Association of Canada |
| IMAC | Inter-Media Arts Center (Huntington, New York) |
| IMAC | Installs, Moves, Adds and Changes |
| IMAC | Isochronous Media Access Control |
| IMAC | Infrastructure Moves, Adds & Changes |
| IMAC | International Mutual Assistance in Criminal Matters (Swiss federal act) |
| IMAC | Indústria de Máquinas de Construção Civil de Gemunde (Portuguese: Construction Machinery Industry Civil Gemunde; Gemunde, Portugal) |
| IMAC | Indiana Minority AIDS Coalition (Indianapolis, IN) |
| IMAC | I Marine Amphibious Corps (WWII usage) |
| IMAC | International Conference on Image Management and Communication in Patient Care |
| IMAC | Information Management Advisory Council |
| IMAC | International Measurement And Control (IMAC Systems, Inc.; Pennsylvania) |
| IMAC | International Model Aircraft Club |
| IMAC | Inhibitory Macrophages |
| IMAC | Induction Material Availability Conference (US Navy Fleet Industrial Supply Center) |
| IMAC | International Movement of Apostolate Children (France) |