| Acronym | Sense | Language | Topics |
|---|---|---|---|
| OTP | Omega Translation Process | In English | |
| OTP | Országos Takarékpénztár | In Hungarian | → Economics |
| OTP | Operational Test Procedure | In English | → Engineering, technology |
| OTP | Operations Turnaround Plan | In English | → Engineering, technology |
| OTP | The Old Testament Pseudepigrapha | In English | → Religion, theology |
| OTP | Outline Test Plan | In English | |
| OTP | Organigramme Technique de Projet | In French | |
| OTP | One-Time Password | In English | → Computer science |