| # | Name | Origin | Meaning | Gender | Save |
|---|---|---|---|---|---|
| 3041 | Odam | English | Son in law. | M | |
| 3042 | Odayle | English | Of the valley. | M | |
| 3043 | Odell | English | Of the valley. | M | |
| 3044 | Odom | English | Son in law. | M | |
| 3045 | Odwolf | English | Wealthy wolf. | M | |
| 3046 | Odwolfe | English | Wealthy wolf. | M | |
| 3047 | Odwulf | English | Wealthy wolf. | M | |
| 3048 | Oegelsby | English | Fearsome. | M | |
| 3049 | Ogden | English | From the oak tree valley. | M | |
| 3050 | Ogdon | English | From the oak tree valley. | M | |
| 3051 | Ogelsby | English | Fearsome. | M | |
| 3052 | Ogelsvie | English | Fearsome. | M | |
| 3053 | Ogelsvy | English | Fearsome. | M | |
| 3054 | Okes | English | From the oak. | M | |
| 3055 | Oliver | English | The olive tree. The biblical olive tree symbolizes fruitfulness and beauty and dignity. 'Extending an olive branch' signifies an offer of peace. | M | |
| 3056 | Ollaneg | English | From Olney. | M | |
| 3057 | Olney | English | From Olney. | M | |
| 3058 | Onslow | English | From the zealous one's hill. | M | |
| 3059 | Onslowe | English | From the zealous one's hill. | M | |
| 3060 | Orahamm | English | From tbe riverbank enclosure. | M | |