| Oliver | A | 4925 | Private | Bothaville 6 Nov 00 (wounded)
Source: DCM recipients | Suffolk Regiment |
| Oliver | G | 3293 | A/Sergeant Major | Source: DCM recipients | Royal Fusiliers (City of London Regiment) |
| Olney | G | 2506 | Sergeant | Died 31 Mar 02 Kroonstad
Source: DCM recipients | Oxfordshire Light Infantry |
| Olsson | C | 540 | Private | Slightly wounded 31 Mar 02 Boschbult
Source: DCM recipients | Kitchener's Fighting Scouts |
| Orchard | G | 5473 | Colour Sergeant | Source: DCM recipients | Scots Guards |
| Orford | E F | 2363 | Lance Corporal | Source: DCM recipients | Scots Guards |
| Organ | E | 21252 | Troop Sergeant Major | 1st Field Troop
Source: DCM recipients | Royal Engineers |
| Ormond | Robert | 4813 | Private | Paardeberg 18 Feb 00 (wounded)
Source: DCM recipients | Black Watch (Royal Highlanders) |
| Osborne | G | 1211 | Sergeant | Vaal Bank 24 Mar 01
Source: DCM recipients | Imperial Light Horse |
| Osborne | W | 69280 | Gunner | Source: DCM recipients | U Battery, RHA |
| Ottey | Thomas William | 2489 | Conductor | Source: DCM recipients | Army Ordnance Corps |
| Oultram | E | 5822 | Private | Kaalfontein 12 Jan 01
Source: DCM recipients | Cheshire Regiment |
| Owen | D | 1178 | Colour Sergeant | Paardeberg etc.
Source: DCM recipients | Duke of Cornwall's Light Infantry |
| Oxford | W | 769 | Colour Sergeant | Severely wounded 28 Aug 00 Modderfontein
Source: DCM recipients | East Lancashire Regiment |
| Page | F | 71140 | Bombardier | Source: DCM recipients | 20th Battery, RFA |
| Pain | H | 3731 | Private | Burma Mounted Infantry
Source: DCM recipients | Essex Regiment |
| Palfreman | H | 30340 | Sergeant | 67th (Sharpshooter) Company. Rietvlei 19 Jan 02
Source: DCM recipients | 18th Battalion, Imperial Yeomanry |
| Palfrey | F W | 260 | Lance Corporal | 5th (Warwick) Company. DISTINGUISHED CONDUCT MEDAL, V.R. (260 Corpl. 2nd Imp. Yeo.); QUEEN'S SOUTH AFRICA 1899-1902, 4 clasps, Cape Colony, Orange Free State, Transvaal, S.A. 1901 (260 Shg.-Sth., 5th Coy. 2nd Imp. Yeo.). DNW Sep 94 £1200.
Source: DCM recipients | 2nd Battalion, Imperial Yeomanry |
| Palmer | G | 1634 | Private | Lombard's Kop 30 Oct 99
Source: DCM recipients | (King's) Liverpool Regiment |
| Palmer | Gilbert | 2034 | Colour Sergeant | Defence of Ladysmith. MBE.
Source: DCM recipients | Devonshire Regiment |
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