| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 261 | Nina | Russian | Russian diminutive of the name Anne: favour; grace. | F | |
| 262 | Ninette | Russian | Variant of Nina: Russian diminutive of the name Anne: favour; grace. | F | |
| 263 | Ninockha | Russian | Grace. | F | |
| 264 | Nitca | Russian | Born at Christmas. | F | |
| 265 | Oksana | Russian | Praise be to God. | F | |
| 266 | Oksanochka | Russian | Praise be to God. | F | |
| 267 | Olechka | Russian | Holy. | F | |
| 268 | Oleg | Russian | Holy. | M | |
| 269 | Olena | Russian | Light. | F | |
| 270 | Olenka | Russian | Holy. | F | |
| 271 | Olezka | Russian | Holy. | M | |
| 272 | Olga | Russian | Holy. | F | |
| 273 | Olya | Russian | Holy. | F | |
| 274 | Ony | Russian | Eagle. | M | |
| 275 | Oral | Russian | Eagle. | M | |
| 276 | Orel | Russian | Eagle. | M | |
| 277 | Orell | Russian | Eagle. | M | |
| 278 | Oriel | Russian | Eagle. | M | |
| 279 | Orlenda | Russian | Eagle. | F | |
| 280 | Orrel | Russian | Eagle. | M | |