| Surname | Initials | Rank | Army No. | ||
|---|---|---|---|---|---|
| O'Donovan | J | Lance Corporal | P/19600 | ||
| O'Dowd | P | Lance Corporal | 13072037 | ||
| O'Driscoll | M | Lance Corporal | P/17263 | ||
| O'Driscoll | P C | Lance Corporal | 3653519 | ||
| O'Farrell | E C | Lance Corporal | 7685310 | ||
| O'Gara | P J | Private | 2584144 | ||
| O'Gorman | C | Lance Corporal | P/10770 | ||
| O'Gorman | J J | Lance Corporal | P/5934 | ||
| O'Grady | E | Private | 4080688 | ||
| O'Grady | A | Lance Corporal | 6285140 |