| Name (1649 results) | Rank | Regiment |
|---|---|---|
| O'Donel, George F. Thomas | Lieutenant | 4th Battalion Royal Fusiliers |
| O'Donel, S. | Captain | Army Veterinary Corps |
| O'Donnell, Percy | Second Lieutenant | Royal Field Artillery |
| O'Donnell, Thomas Henry | Private | Australian Forces |
| O'Donnell, Anthony Patrick | Second Lieutenant | York and Lancaster Regiment |
| O'Donnell, Hugh Neil | Second Lieutenant | Welsh Regiment |
| O'Donnell,, Thomas Joseph | Colonel | Royal Army Medical Corps |
| O'Donovan, Myles Henry | Lieutenant | Royal Munster Fusiliers |
| O'Duffy, Kevin Emmet | Lieutenant | 7th Munster Fusiliers |
| O'Dwyer, Robert Martin | Lieutenant | Royal Field Artillery |