| # | Name | Origin | Meaning | Gender | Save |
|---|---|---|---|---|---|
| 5061 | Odom | English | Son in law. | M | |
| 5062 | Odwolf | English | Wealthy wolf. | M | |
| 5063 | Odwolfe | English | Wealthy wolf. | M | |
| 5064 | Odwulf | English | Wealthy wolf. | M | |
| 5065 | Oegelsby | English | Fearsome. | M | |
| 5066 | Ogden | English | From the oak tree valley. | M | |
| 5067 | Ogdon | English | From the oak tree valley. | M | |
| 5068 | Ogelsby | English | Fearsome. | M | |
| 5069 | Ogelsvie | English | Fearsome. | M | |
| 5070 | Ogelsvy | English | Fearsome. | M | |
| 5071 | Okes | English | From the oak. | M | |
| 5072 | Oldwin | English | Special friend. | F | |
| 5073 | Oldwina | English | Special friend. | F | |
| 5074 | Oldwyn | English | Special friend. | F | |
| 5075 | Oleda | English | Winged. | F | |
| 5076 | Oleta | English | Winged. | F | |
| 5077 | Oletha | English | Light; nimble. | F | |
| 5078 | Olexa | English | Defender of mankind. Feminine of Alexander. | F | |
| 5079 | Olita | English | Winged. | F | |
| 5080 | 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 | |