| O'Reilly | J | 147 | Trooper | Frontier Wars. SAGS (1) 1879. Medal returned | Frontier Light Horse |
| O'Reilly | J | | Trooper | Frontier Wars. SAGS (1) 1879. Medal returned | Border Horse |
| O'Reilly | J | | Surgeon | Frontier Wars. SAGS (1) 1877-8-9 | Army Medical Service |
| O'Reilly | J | | | Source: QSA and KSA medal rolls | Frontier Light Horse |
| O'Reilly | J B | | | 3rd Battalion
Source: QSA and KSA medal rolls | Essex Regiment |
| O'Reilly | J E | | Trooper | Natal 1906 (1)
Source: Recipients of the Natal 1906 Medal | Transvaal Mounted Rifles |
| O'Reilly | J F H | | Trooper | BSACM Rhodesia 1896 (0).
Source: BSACM rolls | Bulawayo Field Force |
| O'Reilly | J H | | | A Squadron
Source: QSA and KSA medal rolls | Cape Colonial Forces |
| O'Reilly | J J | | Reverend | Source: QSA Medal Rolls | Army Chaplain's Department |
| O'Reilly | J J | | | Source: QSA and KSA medal rolls | New Zealand, 2nd Contingent |
| O'Reilly | J L | | Private | Severely wounded. Rooival, 11 April 1902
1st Battalion.
Source: South African Field Force Casualty Roll | Scottish Horse |
| O'Reilly | J R | | Trooper | Natal 1906 (0)
Source: Recipients of the Natal 1906 Medal | Newcastle Division Reserves |
| O'Reilly | J R | | Corporal | Frontier Wars. SAGS (1) 1879. Medal returned | Lydenburg Rifles |
| O'Reilly | J R O | | Lieutenant | Frontier Wars. SAGS (1) 1879 | Transvaal Mounted Rifles |
| O'Reilly | Jacob F | 99 | | Source: Medal rolls | Canada, Royal Canadian Artillery |
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