| Acronym | Definition |
|---|
| OOT | Ocarina of Time (Legend of Zelda video game) |
| OOT | Office of Transportation (various locations) |
| OOT | Opera on Tap (various locations) |
| OOT | Object-Oriented Testing (computing) |
| OOT | Olive Oil Times (publication) |
| OOT | Out Of Town |
| OOT | Out of Time |
| OOT | Open Office Text |
| OOT | Out of Order Transfer |
| OOT | Object Oriented Technology |
| OOT | Out of Touch |
| OOT | Outpatient Occupational Therapy |
| OOT | Other Other Topics |
| OOT | One Other Thing |
| OOT | Out of Topic |
| OOT | Object-Oriented Technology |
| OOT | Office of Technology |
| OOT | Out of Tolerance |
| OOT | Off Off Topic (online forums) |
| OOT | Ocean of Tears (Everquest) |
| OOT | Object Oriented Travel |
| OOT | Out of Trend |
| OOT | Object-Oriented Turing (University of Toronto) |
| OOT | Out of Training |
| OOT | Over Ocean Transportation (US Marine Corps) |
| OOT | Officer on the Train |
| OOT | Original Original Trilogy (Star Wars) |
| OOT | One On Twoism (Twoism electronic music community) |
| OOT | One Obligor Total (lending) |
| OOT | Ordo Off Topicus |