| OTIS | Occurrence Tracking Information System 
| Others |
| OTIS | Offender Tracking and Information System
| Others |
| OTIS | Offender Tracking Information System
| Others |
| OTIS | Office of Transportation Infrastructure and Sustainability
| Others |
| OTIS | Oil Tank Inspection And Surveillance
| Others |
| OTIS | Oil Tank Inspection System
| Others |
| OTIS | On Time In School
| Others |
| OTIS | On Time In Spec
| Others |
| OTIS | Online Teacher Information System
| Others |
| OTIS | Online Technology and Instructional Sessions
| Others |
| OTIS | Online Touring Information System
| Others |
| OTIS | Online Tracking Information System
| Others |
| OTIS | Online Transportation Information System
| Others |
| OTIS | Online Travel Information System
| Others |
| OTIS | Only The Illuminati Stands
| Others |
| OTIS | Only The Illuminati Succeed
| Others |
| Otis | Only The Illuminati Survives
| Others |
| OTIS | Operations Terminal Information System
| Others |
| OTIS | Operative Term Is Stimulate
| Others |
| OTIS | Optical Thermal Imaging System
| Others |
| OTIS | Optical Transpose Interconnection System
| Others |
| OTIS | Optimal Thermal Interpolation System
| Others |
| OTIS | Optimal Traveling Independent Space
| Others |
| OTIS | Optimum Thermal Interpolation System
| Others |
| OTIS | Optional Transponder Installation Saddle
| Others |
| OTIS | Organ Transplant Information System
| Others |
| OTIS | Organization of Teratology Information Specialists
| Others |
| OTIS | Organize This Important Stuff
| Others |
| OTIS | Organizing This Important Stuff
| Others |
| OTIS | Otis Of Thee I Sing
| Others |
| OTIS | Our Time Is Short
| Others |
| OTIS | Outside The Inner Sanctum
| Others |
| OTIS | Outstanding Technology Innovative and Service
| Others |
| OTIS | Overhead Travel Information System
| Others |