| Osborn | J | 3158 | Private | QSA (4)
Source: Provisional list of Wepener recipients | Cape Mounted Rifles |
| Osborn | J A | 1097 | Corporal | QSA (4)
Source: Provisional list of Wepener recipients | Kaffrarian Rifles |
| Osborne | A A | 910 | Trooper | QSA (2)
Source: Provisional list of Wepener recipients | Brabant's Horse |
| Ovens | G J | 829 | Trooper | QSA (4)
Source: Provisional list of Wepener recipients | Brabant's Horse |
| Owen Thomas | | | Lieutenant Col | QSA (4)
Source: Provisional list of Wepener recipients | Prince of Wales Light Horse |
| Oxenham | C O | 5062 | Lance Corporal | QSA (4)
Source: Provisional list of Wepener recipients | Brabant's Horse |
| Oxley | J H | 3284 | Private | QSA (4)
Source: Provisional list of Wepener recipients | Cape Mounted Rifles |
| O’Brien | D G | 3260 | Private | QSA (4)
Source: Provisional list of Wepener recipients | Cape Mounted Rifles |
| O’Brien | L | 1145 | Trooper | QSA (4)
Source: Provisional list of Wepener recipients | Brabant's Horse |
| O’Carroll | J Mc C | 2778 | Private | QSA (4)
Source: Provisional list of Wepener recipients | Cape Mounted Rifles |
| O’Connor | F H P | 3261 | Private | QSA (4)
Source: Provisional list of Wepener recipients | Cape Mounted Rifles |
| O’Connor | J M | 699 | Private | QSA (4)
Source: Provisional list of Wepener recipients | Kaffrarian Rifles |
| O’Donoghue | D P | | Trooper | QSA (3)
Source: Provisional list of Wepener recipients | Brabant's Horse |
| O’Donoghue | J H | 116 | Trooper | QSA (4)
Source: Provisional list of Wepener recipients | Brabant's Horse |
| O’Flahertie | | 2848 | Private | QSA (4)
Source: Provisional list of Wepener recipients | Cape Mounted Rifles |
| O’Halloran | J | 813 | Private | QSA (4)
Source: Provisional list of Wepener recipients | Kaffrarian Rifles |
| O’Meagher | T | 3262 | Private | QSA (4)
Source: Provisional list of Wepener recipients | Cape Mounted Rifles |
| O’Neill | F R | 3505 | Private | QSA (4)
Source: Provisional list of Wepener recipients | Cape Mounted Rifles |
| O’Reilly | J | 1176 | Trooper | QSA (4)
Source: Provisional list of Wepener recipients | Brabant's Horse |
| O’Sullivan | J | 3211 | Private | QSA (4)
Source: Provisional list of Wepener recipients | Cape Mounted Rifles |
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