| Acronym | Definition |
|---|
| OTL➣On the Low |
| OTL➣Opportunity to Learn (various organizations) |
| OTL➣Outside the Lines |
| OTL➣Oracle Time and Labor (business software) |
| OTL➣Online Teaching and Learning |
| OTL➣Operations Team Leader |
| OTL➣Overtime Loss (hockey) |
| OTL➣Oracle Time and Labor |
| OTL➣Outline |
| OTL➣Open Type Layout |
| OTL➣Oracle Top Link |
| OTL➣Output Transformer Less |
| OTL➣Over The Line (tournament in San Diego, CA, USA) |
| OTL➣Out To Lunch |
| OTL➣Office of Technology Licensing |
| OTL➣One True Love (Internet slang) |
| OTL➣Overhead Transmission Line |
| OTL➣Off the Line (marching band) |
| OTL➣Off the List |
| OTL➣Output Transformer-Less (audio systems) |
| OTL➣Oberstleutnant (German military; Lieutenant Colonel) |
| OTL➣Our Timeline |
| OTL➣On the Loose (outdoors club of the Claremont Colleges) |
| OTL➣OpenType Layout |
| OTL➣Onward Technologies, Ltd. (various locations) |
| OTL➣Only the Lonely |
| OTL➣Over Time Limit (auto racing) |
| OTL➣Orange Township Library (Rome City, IN) |
| OTL➣Operational Test Launch |
| OTL➣Optical Transmission Loss |
| OTL➣Outer Tube Limit (heat exchangers) |
| OTL➣Observer Target Line |
| OTL➣Oxidizer Topping Line |
| OTL➣Ogden Technology Laboratories |
| OTL➣Outdoor Test Laboratory |
| OTL➣Oil Tank Light |
| OTL➣Optical Transport Layer (Ciena) |
| OTL➣Operating Time Limit (aviation) |
| OTL➣Optimum Transmission Level |
| OTL➣Operating Temperature Limit |
| OTL➣Oldtimer Tractorenclub Lochristi (Dutch: Lochristi Oldtimer Tractor Club; Lochristi, Belgium) |