| Surname | Given Names | Rank | Place | |
| OAKLEY | Thomas | L.-Corporal | Bedminster | Bristol |
| OATEN | Edmund George | Pte. | Taunton | |
| O’BRIEN | Henry | Pte. | Martock | |
| O’CONNELL | Daniel | Pte. | St. James’ | Bristol |
| O’CONNOR | Bernard | C.S.M. | Lisnarick | Irvinestown, co. Ferm |
| ODAMS | Cuthbert | L.-Corporal | Tottenham | Middx |
| ODELL | Albert | Pte. | Bedford | |
| O’DELL | Frederick William | Pte. | Southampton | |
| O’DONNELL | Frederick | L.-Corporal | Clifton | Bristol |
| OFFER | Herbert George | Pte. | Bath | |
| OGDEN | Walter Edward | Pte. | St. Philip’s | Bristol |
| O’HARA | Martin | Pte. | Middlesbrough | Yorks |
| OLDFIELD | Joseph George | Pte. | Weston-in-Gordano | |
| OLDHAM | William John | Pte. | Birmingham | |
| OLDING | Frederick Charles | Pte. | Saxmundham | |
| OLDRING | Herbert | Pte. | Mells | |
| OLIVER | Ernest | Pte. | St. James’ | Bristol |
| OLIVER | Frank Lambton | 2nd Lieut. | ||
| OLIVER | Frederick James | Pte. | Forest Gate | Essex |
| OLIVER | Frederick James | Pte. | Parkstone | Dorset |
| OLIVER | John Goodridge | Pte. | Southampton | |
| OLLIS | James Albert William | L.-Corporal | Keynsham | |
| O’NEILL | Lawrence | Pte. | Ferrybank | co. Kilkenny |
| ONSLOW | Arthur | Pte. | Bath | |
| OPEN | Albert E. J. C. | L.-Corporal | High Ham | |
| OPENSHAW | Edward Hyde | Lieut.-Colonel | Cheddar | |
| ORCHARD | John | Pte. | Hinton Charterhouse | |
| ORMEROD | Clement | Pte. | Stixwould | Lincs |
| ORR | Robert Clifford | Capt. | ||
| OSBORNE | Frank Solomon | Pte. | Grimsby | |
| OSBORNE | William | L.-Corporal | Merriott | |
| OSBORNE | William | L.-Corporal | Wootten | Northants |
| OSMAN | Arthur Wilfred | Corporal | Dorchester | |
| OSMAN | Henry William James | Pte. | St. Clement’s | Oxford |
| OSMENT | John James | Pte. | Portishead | |
| OSMOND | Herbert John S. | L.-Corporal | Norton Malreward | |
| OSMOND | William | Pte. | Bath | |
| OSTLER | Sydney | Pte. | East Coker | |
| OULD | William John | Pte. | Penryn | Cornwall |
| OWEN | Augustus Charles M.C. | Lieut. | ||
| OWEN | Basil John | Pte. | Tylorstown | Glam. |
| OWEN | David John | Sgt. | Tredegar | Mon |
| OWENS | Arthur John | Pte. | Ombersley | Worcs |
| OWERS | Elisha | Pte. | Dorchester | |
| OXENHAM | Robert | Pte. | Bristol | |
Date last modified: 14 Nov 2003 20:22:00