| naam | geboren | overleden | leeftijd | e.v. | opmerking | aanduiding |
|---|
| Charles Douglas O'Brien | 1911 | 18-02-1945 | 33 | | Private / Toronto Scottisch Regiment (M.G.) | 25b-13 |
| Timothy Joseph O'Callaghan | | 20-02-1945 | | | Private / Royal Hamilton Light Infantry | 11g-10 |
| John Joseph O'Donnell | 1921 | 26-02-1945 | 23 | | Lance Sergeant / Cameronians (Scottish Rifles) | 22a-09 |
| Michael Joseph O'Donnell | 1923 | 15-02-1945 | 21 | | Corporal / Cameronians (Scottish Rifles) | 12b-13 |
| Lawrence Cornelius O'Farrell | | 05-03-1945 | | | Rifleman / Queen's Own Rifles Of Canada | 07f-13 |
| Hugh Raymond O'Handley | 1902 | 07-02-1945 | 42 | | Private / Royal Canadian Army Medical Corps | 16e-06 |
| Lawrence Edward O'Loughlin | 1917 | 01-03-1945 | 27 | | Private / Black Watch (Royal Highland Reg.) of Can | 07g-05 |
| Wilfred Allan O'Mara | 1925 | 23-02-1945 | 19 | | Private / Royal Hamilton Light Infantry | 20b-14 |
| Edmund Wingfield Burton O'Meara | 1919 | 08-02-1945 | 25 | | Lieutenant / Regina Rifle Regiment | 04e-08 |
| Cornelius O'Neill | 1925 | 01-03-1945 | 19 | | Private / Essex Scottisch Regiment | 21c-08 |
| Edwin Lawrence Oakes | 1916 | 03-03-1945 | 28 | | Lance Corporal / Highland Light Infantry Of Canada | 08e-03 |
| Edward Oliver Oberg | 1925 | 30-03-1945 | 19 | | Private /Queen's Own Cameron Highlanders Of Canada | 19d-09 |
| Vernon Patrick Obright | 1922 | 17-06-1944 | 21 | | Pilot Officer*Air Gunner/ Royal Canadian Air Force | 12f-10 |
| Samuel Ogden | 1922 | 24-03-1945 | 22 | | Gunner / Royal Artillery | 06e-15 |
| Alfred William Ogg | 1923 | 01-04-1945 | 21 | | Private / Calgary Highlanders | 19d-01 |
| Scott McCrury Ogilvie | 1926 | 30-11-1944 | 18 | | Pilot Officer*Air Gunner/ Royal Canadian Air Force | 17b-10 |
| Lawrence Elford Ollis | 1917 | 05-03-1945 | 27 | | Gunner / Royal Canadian Artillery | 21d-01 |
| Maxwell Olshansky | 1922 | 12-10-1944 | 22 | | Leading Aircraftman / Royal Canadian Air Force | 15g-11 |
| George Wesley Olson | 1921 | 20-11-1944 | 23 | | Craftsman /R.Can.Electrical & Mechanical Engineers | 15g-06 |
| Joseph James Oram | 1921 | 19-02-1945 | 23 | | Lance Sergeant / Royal Regiment Of Canada | 20f-12 |
| William Delbert Ormiston | 1921 | 21-02-1945 | 23 | | Captain / Royal Winnipeg Rifles | 11e-01 |
| John James Ormston | 1910 | 24-03-1945 | 34 | | Gunner / Royal Artillery | 06b-10 |
| Douglas E. Orr | 1923 | 19-02-1945 | 21 | | Private / Royal Regiment Of Canada | 10e-05 |
| Thomas MacDiarmid Orr | 1912 | 26-02-1945 | 32 | | Private / Royal Hamilton Light Infantry | 20b-13 |
| Ivan Malcolm Orser | 1921 | 28-02-1945 | 23 | | Corporal / Royal Hamilton Light Infantry | 07b-10 |
| Leslie H. Osborne | 1922 | 24-03-1945 | 22 | | Sapper / Royal Engineers | 06b-09 |
| Harry Ross Osgoode | 1921 | 03-01-1945 | 23 | | Sapper / Royal Canadian Engineers | 02b-06 |
| John Kenneth Ostrom | 1920 | 01-03-1945 | 24 | | Rifleman / Queen's Own Rifles Of Canada | 24d-01 |
| Jacos Ostwald | 1917 | 28-02-1945 | 27 | | Private / The Calgary Highlanders | 08f-15 |
| Carl Oswald | 1922 | 20-01-1945 | 22 | | Private / Lake Superior Regiment (Motor) | 16a-07 |
| William George Otterholm | 1914 | 29-06-1943 | 28 | | Flight Sergeant*Air Gunner / Royal Can. Air Force | 16b-15 |
| Joseph Renaud Thomas Ouellette | 1924 | 26-02-1945 | 20 | | Private / Le Regiment de La Chaudiere | 22a-14 |
| Roger E. Ouellette | 1917 | 18-04-1945 | 27 | | Lieutenant / Royal Canadian Regiment | 04e-11 |
| Carl O. Overby | 1918 | 01-04-1945 | 26 | | Lance Sergeant / Royal Canadian Engineers | 22d-09 |
| Gordon Ralph Ozard | 1925 | 27-02-1945 | 19 | | Private / Royal Regiment Of Canada | 21b-16 |