| Abbreviation | Definition |
|---|---|
| IMCC | International Museum Construction Congress |
| IMCT | Industry Manufacturing Construction Transportation |
| IMLAB | Interdisziplinaeres Modulares Lehrsystem Architektur Bauwesen (German: Interdisciplinary Modular Teaching System Architecture Construction) |
| IMPACT | International Missions Projects And Construction Teams |
| IMR | Inspection, Maintenance, Repair |
| IMR | Iterative Model Reconstruction |
| IMT | Immersed Tube Tunnel |
| INFRA | INFrastructure for Rebuilding America |
| IPCCP | Inshore Patrol Craft Construction Project |
| IPS | Internal Pipe Size |
| IR | Inspection Request |
| IS | Industrial Supplies |
| ISAC | In Situ Additive Construction |
| ISARC | International Symposium for Automation and Robotics in Construction |
| ISARC | International Symposium on Automation and Robotics in Construction |
| ISCL | Italian Society for Construction Law |
| ISCL | Italian Society of Construction Law |
| ISCS | International Society for Construction Sciences |
| ISMB | Indian Standard Medium-weight Beam |
| ISMC | Indian Standard Medium Weight Channel |