| Acronym | Definition |
|---|
| OIT | Organización Internacional del Trabajo (Spanish: International Labor Organization) |
| OIT | Organisation Internationale du Travail (International Labour Organization) |
| OIT | Office of Information Technology |
| OIT | Oregon Institute of Technology |
| OIT | Oral Immunotherapy (food allergy treatment) |
| OIT | Outsourced Information Technology |
| OIT | Office of Industrial Technologies |
| OIT | Object Identifier Tree |
| OIT | Old Indian Trick |
| OIT | Oriental Institute of Technology (Taipei County, Taiwan; est. 1968) |
| OIT | Office of Instructional Technology |
| OIT | Operator Interface Terminal |
| OIT | Oxidation Induction Time |
| OIT | Orbiter Integrated Test (US NASA) |
| OIT | Optical Image Technology, Inc. |
| OIT | Old Italian |
| OIT | Oxidation Induction Temperature |
| OIT | Oita, Japan - Oita (Airport Code) |
| OIT | Object Identifier Tree (MIB) |
| OIT | Officer in Training |
| OIT | Operator Information Telex (Airbus Industrie) |
| OIT | Onboard Information Terminal |
| OIT | Officer in Trouble (law enforcement) |
| OIT | Opryland International Travel |
| OIT | Optical Imaging Technology |