| # | Last Name | First Name | Initials | Rank | Regiment | Date of Death |
|---|---|---|---|---|---|---|
| 19438 | O'regan | Cyril Dominic | C D | Lance Corporal | Rand Light Infantry, S.A. Forces | 1941-12-31 |
| 19440 | O'reilly | Keith Henry | K H | Lieutenant | South African Air Force | 1941-12-17 |
| 19441 | O'reilly | Patrick | P | Private | South African Infantry | 1917-09-21 |
| 40159 | O'reilly | Patrick Malcolm | P M | Lance Corporal | Rhodesia Regiment | 1976-09-15 |
| 19166 | Oakes | Alexander Montague | A M | Private | Australian Infantry, A.I.F. | 1915-09-29 |
| 19167 | Oakes | Allan George Tufnell | A G T | Lieutenant | South African Air Force | 1943-07-03 |
| 19168 | Oakes | Kenneth Tufnell | K T | Lieutenant | South African Air Force | 1945-04-21 |
| 19173 | Oates | Joshua Laurence | J L | Sub-Lieutenant | Royal Naval Volunteer Reserve | 1916-11-13 |
| 19174 | Oates | Leonard John | L J | Lieutenant | South African Air Force | 1943-11-28 |
| 19175 | Oates | Reginald John Stafford | R J S | Rifleman | King's Royal Rifle Corps | 1915-05-10 |
| 32351 | Obbes | Gideon M F | G M F | Trooper | South African Armoured Corps | 1975-11-24 |
| 19179 | Oberholzer | MacHiel Adriaan | M A | Sergeant | Mounted Commandos, S.A. Forces | 1914-11-20 |
| 19180 | Oberholzer | Michael Adrian | M A | Lieutenant | South African Air Force | 1941-12-12 |
| 19182 | Oberholzer | Nicolaas Tjaart | N T | Sergeant | South African Horse | 1916-09-07 |
| 19183 | Oberholzer | Sarel Gerhardus | S G | Private | South African Infantry | 1917-07-13 |
| 19184 | Oberholzer | Sarel Johannes Jacobus | S J J | Lance Bombardier | South African Artillery | 1942-07-03 |
| 19186 | Oberholzer | William Daniel | W D | Lance Corporal | South African Infantry | 1918-04-10 |
| 32352 | Oberholzer | Antonie | A | Corporal | South African Corps of Engineers | 1980-03-07 |
| 32354 | Oberholzer | Lodewikus Johannes | L J | Rifleman | South African Infantry Corps | 1977-10-26 |
| 19190 | Oborne | Alfred Frank | A F | Captain | Rand Light Infantry, S.A. Forces | 1942-10-23 |
| 19241 | Oddie | Alistair Crompton Williams | A C W | Lieutenant | South African Air Force | 1944-11-23 |
| 19248 | Odendaal | Izak Johannes Meyer | I J M | Major | South African Air Force | 1944-08-17 |
| 19250 | Odendaal | Norman Frederick | N F | Second Lieutenant | South African Air Force | 1945-03-10 |
| 19252 | Odendaal | William Peter | W P | Private | Imperial Light Horse/Kimberley Regiment, S.A.Forces | 1944-07-26 |
| 19259 | Oehley | Charles Edward | C E | Lieutenant | Royal Naval Reserve | 1941-04-18 |
| 19262 | Oelofse | Johannes Roelof Stephanus | J R S | Pilot Officer | Royal Air Force | 1940-08-08 |
| 19264 | Oelofse | M N | Bombardier | South African Artillery | 1942-06-15 | |
| 19268 | Oertel | Charles Ernest | C E | Corporal | South African Tank Corps | 1942-06-02 |
| 19294 | Oldewage | Stepanus Petrus | S P | Private | 18th Mounted Rifles (Griqualand West Ruiters) | 1915-01-25 |
| 19299 | Oldham | Gordon William | G W | Flying Officer | Royal Air Force Volunteer Reserve | 1944-04-27 |
| 19300 | Oldham | Milton | M | Corporal | King's Royal Rifle Corps | 1918-07-05 |
| 40485 | Oldman | Wilfred Southey Deare | W S D | Captain | Royal Berkshire Regiment | 1915-09-25 |
| 19302 | Oldridge | Aubrey Roos | A R | Captain | South African Air Force | 1944-12-13 |
| 19327 | Oliver | Albert Edward | A E | Private | South African Infantry | 1916-11-17 |
| 19329 | Oliver | Edgar Alexander | E A | Second Lieutenant | Royal Fusiliers | 1916-07-27 |
| 19330 | Oliver | Egbert Conrad | E C | Lieutenant | Royal Naval Volunteer Reserve | 1917-02-05 |
| 19331 | Oliver | John | J | Private | Cape Corps | 1918-09-20 |
| 19333 | Oliver | James Gordon | J G | Lance Corporal | South African Infantry | 1916-02-26 |
| 19343 | Olivier | Frans Gysbert | F G | Air Sergeant | South African Air Force | 1942-08-28 |
| 19347 | Olivier | Hendrik Jacobus | H J | Lieutenant | Mounted Commandos, S.A. Forces | 1914-12-23 |
| 19353 | Olivier | Johannes Wynand Lodewikus | J W L | Burgher | Mounted Commandos, S.A. Forces | 1914-12-02 |
| 19357 | Olivier | Paul Alfred Edmond | P A E | Private | Technical Service Corps, S.A. Forces | 1944-11-10 |
| 19359 | Olivier | Stephanus Hendrik | S H | Corporal | Witwatersrand Rifles/Regiment de la Rey, S.A. Forces | 1944-07-02 |
| 19360 | Olivier | Samuel Martin | S M | Private | First City/Cape Town Highlanders, S.A. Forces | 1945-04-16 |
| 19363 | Olivier | Willem Hendrik | W H | Corporal | Special Service Battalion, S.A. Forces | 1944-06-10 |
| 32373 | Olivier | John Phillip | J P | Rifleman | South African Infantry Corps | 1983-05-20 |
| 32374 | Olivier | Nico Smith | N S | Corporal | 1 Parachute Battalion | 1987-10-31 |
| 19368 | Olsen | Edward | E | Private | South African Infantry | 1917-04-09 |
| 19371 | Olson | Karl Ludwig Eugen | K L E | Private | 5th Mounted Rifles (Imperial Light Horse) | 1915-04-27 |
| 19374 | Olver | Robert Duncan | R D | Sergeant | Royal Air Force Volunteer Reserve | 1942-05-09 |