| Last Name | First Name | Context | Book |
| Oglesby | Jacob | Grantee | VALG 30:524 |
| Oglesby | Jacob | Grantee | VALG 30:616 |
| Oglesby | Pleasant Bailey | Mentioned | VALG H:222 |
| Old Mountain Road |   | Mentioned | VALG A:261 |
| Old Mountain Road |   | Mentioned | LSB: 126 |
| Old Mountain Road |   | Mentioned | LSB: 302 |
| Old Mountain Road |   | Mentioned | LSB: 265 |
| Old Mountain Road |   | Mentioned | VALG 48:486 |
| Old Mountain Road |   | Mentioned | VAPB 41:437 |
| Old Mountain Road |   | Mentioned | LSB: 309 |
| old office road |   | Mentioned | LSB: II |
| old office road |   | Mentioned | VALG 65:131 |
| Oliver |   | Mentioned | VAPB 33:317 |
| Oliver | Nichason | Mentioned | VAPB 34:446 |
| Oliver | Nickason | Mentioned | VAPB 32:50 |
| Oliver | Nickason | Mentioned | VAPB 34:255 |
| Orange Courthouse Road |   | Mentioned | LSB: 276 |
| Orange Line |   | Mentioned | VAPB 29:356 |
| Ore | James | Grantee | VALG 27:552 |
| Ore | James | Grantor | Louisa K:182 |
| Ore | James? | Mentioned | LSB: 160 |
| Ore | Joseph | Grantor | Louisa F:206 |
| Ore | Joseph | Mentioned | Louisa K:182 |
| Ore | Joseph | Mentioned | VALG 27:552 |
| Ore | Joseph | Grantor | Louisa G:164 |
| Ore | Joseph | Mentioned | LSB: 160 |
| Ore | Joseph, Jr | Grantee | Louisa G:164 |
| orphan's land |   | Mentioned | VAPB 15:083 |
| Orphans line |   | Mentioned | VAPB 26:256 |
| Overton |   | Mentioned | VAPB 12:234 |
| Overton |   | Mentioned | VAPB 16:244 |
| Overton | Capt. | Mentioned | VAPB 17:254 |
| Overton | Capt. | Mentioned | VAPB 17:222 |
| Overton | Capt. | Mentioned | VAPB 19:693 |
| Overton | James | Mentioned | VAPB 12:243 |
| Overton | James | Grantee | VAPB 11:323 |
| Overton | James | Grantee | VALG 23:170 |
| Overton | John | Grantee | VALG 21:097 |
| Overton | John | Mentioned | LSB: 209 |
| Overton | John | Grantee | VALG 34:088 |
| Overton | John | Grantee | VALG 23:170 |
| Overton | John | Grantee | VALG 21:095 |
| Overton | Samuel, Jr | Grantee | LSB: 316 |
| Overton | William | Grantee | VAPB 12:335X |
| Overtons Fork |   | stream | VAPB 12:235 |
| Overtons Fork |   | stream | VAPB 12:241 |
| Overtons Fork |   | stream | VAPB 12:419 |
| Overton's Fork |   | stream | VAPB 12:385 |
| Owen | Ann | Grantee | VAPB 14:335 |
| Owen | Ann | Grantee | VAPB 14:328 |
| Owen | Ann | Mentioned | VAPB 15:138 |
| Owen | Ann | Mentioned | VAPB 17:235 |
| Owen | Jas | Grantee | PB 20:63 |
| Owens |   | Mentioned | VAPB 15:083 |
| Owens |   | Mentioned | VAPB 12:388 |
| Owens | Ann | Mentioned | VAPB 17:290 |
| Owens | Anne | Mentioned | VAPB 18:481 |
| Owens | John, Jr. | Grantee | VAPB 29:433 |
| Owens Creek |   | stream | VAPB 11:232 |
| Owens Creek |   | stream | PB 14:260 |
| Owens Creek |   | stream | VAPB 15:078 |
| Owens Creek |   | stream | VAPB 13:483 |
| Owens Creek |   | stream | VAPB 22:156 |
| Owens Creek |   | stream | VAPB 12:246 |
| Owens Creek |   | stream | VAPB 23:752 |
| Owens Creek |   | stream | VAPB 32:427 |
| Owens Creek |   | stream | PB 14:159 |
| Owens Creek |   | stream | VAPB 10:434* |