“O” Series Railway Station Code
| STATION NAME | STATION CODE |
|---|---|
| OBAIDULLA GANJ | ODG |
| OBRA DAM | OBR |
| OBULAVARIPALLI | OBVP |
| OCHIRA | OCR |
| ODDANCHATRAM | ODC |
| ODDARAHALLI | ORH |
| ODELA | OEA |
| OKHA | OKHA |
| OKHA MADHI | OKD |
| OKHLA | OKA |
| OLD MALDA | OMLF |
| OLLUR | OLR |
| OMALUR | OML |
| OMKARESHWAR RD | OM |
| ONDAGRAM | ODM |
| ONGOLE | OGL |
| ONTIMITTA | VNM |
| OORGAUM | OGM |
| ORAI | ORAI |
| ORGA | ORGA |
| ORR | ORR |
| OSIYAN | OSN |
| OTTAPPALAM | OTP |