| Word | Farsi | English |
|---|---|---|
| ons | صد گرم | - |
| ontdek | کشف کردن | - |
| ontkent | - | denies |
| ontkent | - | denies |
| ontmoeten | - | to meet |
| onward | رو به جلو | - |
| onweren | رعد و برق | - |
| ook | همچنین | - |
| ooze | - | slowly trickle or seep out of something. |
| op | روی | - |
| opaatje | بابابزرگ | - |
| opdrachtgever | - | client / employer |
| openingswedstrijd | - | opening match |
| openingswedstrijd | - | opening match |
| openingswedstrijd | - | opening match |
| ophalen | - | to pick up / collect |
| oplevert | - | yields / delivers |
| oplevert | - | yields / delivers |
| opted | انتخاب کرد | - |
| optimal | بهینه، مطلوب | Best or most effective; most desirable |