| Abbreviation | Definition |
|---|---|
| OSBC | Office of the State Bank Commissioner |
| osc | outstation cheque |
| OSL | outstanding liabilities |
| OTB | Orix Trust and Banking |
| OTCC | Over The Counter Clearing |
| OTMS | Off-site Transaction Monitoring System |
| OTP | One-Time Password |
| OUB | Overseas Union Bank |
| OUB | Oxford University Bank |
| OUBC | Ouachita Bank Corporation |
| OVB | Ohio Valley Bank |
| OVB | Ohio Valley Bank's |
| OZK | Bank OZK |
| P | Pledge |
| P | Principal |
| P&L | Profit and Loss |
| P.C.P.A | Percent Compounded Per Annum |
| P/E | price/earnings |
| PA | Patent Act |
| PAC | Political Affairs Committee |