| Surname | Forename | Rank | Unit | Born | Resided |
| CRAMPTON | John Moreley | Private | King's Own Scottish Borderers | Born Dublin | Resided Dumfries, Dumfries |
| CRANWILL | Valentine Arthur Butler | Captain | 2nd Battalion, East Lancashire Regiment | | |
| CRAWFORD | Sydney George | Lieutenant | 3rd Battalion, Royal Dublin Fusiliers | Born at Killorgan, Co. Dublin | |
| CRAWFORD | W. R. | Sapper | Corps of Royal Engineers | Birthplace unknown | Resided Blackrock, Co. Dublin |
| CRAWFORD | Arthur Sidney | Private | Princess Victoria's (Royal Irish Fusiliers) | Born Booterstown, Co. Dublin | Resided Blackrock, Co. Dublin |
| CRAWFORD | William | Bombardier | Royal Horse Artillery and Royal Field Artillery | Born Dublin | |
| CREASEY | Charles | Private | Essex Regiment | Born Southminster, Essex | Resided Inchicore, Dublin |
| CREED | Charles | Gunner | Royal Horse Artillery and Royal Field Artillery | Born Dublin | |
| CREENAN | J | Sailor | S.S. "Windermere" (Cardiff) | Born in Dublin | |
| CREGAN | Christopher | Private | Royal Scots Fusiliers | Born Dublin | Resided Dublin |
| CREGAN | Christopher | Private | Prince of Wales's Leinster Regiment (Royal Canadians) | Born Dublin | |
| CREGAN | Patrick | Rifleman | Royal Irish Rifles | Born Dublin | |
| CRICHTON | Alec Godfrey | Second Lieutenant | Royal Dublin Fusiliers | Born Dublin | |
| CRICKMORE | Henry | Company Sergeant Major | Norfolk Regiment | Born Dublin | |
| CRILLY | Joseph | Company Sergeant Major | Royal Inniskilling Fusiliers | Born St. Michael & John's, Dublin | |
| CRILLY | James | Private | Prince of Wales's Leinster Regiment (Royal Canadians) | Born Phibsborough, Dublin | |
| CRIMMIN | D | Ordinary Seaman | H.M.S. "Vivid" | | |
| CRIMMINS | Patrick | Private | Princess Victoria's (Royal Irish Fusiliers) | Native of Co. Limerick | Resided Dublin |
| CROLEY | William | Lance Corporal | Princess Victoria's (Royal Irish Fusiliers) | Born Dublin | |
| CROMIEN | Lawrence | Private | Royal Inniskilling Fusiliers | Born Dublin | |
| CROMIEN | Patrick | Private | Royal Dublin Fusiliers | Born Dublin | |
| CROMWELL | William | Private | Alexandra, Princess Of Wales's Own (Yorkshire Regiment) | Born Phipsborough, Dublin | |
| CRONHELM | Arthur Geoffrey | Lieutenant | 23rd Squadron Royal Flying Corps and 2nd/22nd Battalion, London Regiment | Native of Craigend, Howth, Co. Dublin | |
| CRONIN | Richard P. | Lieutenant | Corps of Royal Engineers | | |
| CRONIN | John | Private | Royal Dublin Fusiliers | Born Dublin | |
| CRONIN | Richard | Private | Sherwood Foresters (Nottinghamshire and Derbyshire Regiment) | Born Dublin | Resided Dublin |
| CRONIN | Samuel | Rifleman | Royal Irish Rifles | Born Dublin | |
| CRONYN | William Benn | Captain | Indian Veterinary Hospital (Marseilles), Army Veterinary Corps | Born at Dublin | |
| CROOKSHANK | Arthur | Corporal | Royal Dublin Fusiliers | Born Towney, Dundrum, Co. Dublin | Resided Towney |
| CROSS | George Herbert | Captain | Army Service Corps, attached 9th (North Irish Horse) Battalion, Royal Irish Fusiliers | | |
| CROSS | Patrick | Rifleman | Royal Irish Rifles | Born Dublin | Resided Rathdrum, Co. Wicklow |
| CROSTHWAIT | William Henry | Private | 116th Battalion, Canadian Infantry (Central Ontario Regiment) | Born in Dublin | |
| CROWE | Albert Edward | Dresser | South African Veterinary Corps | Born in Dublin | |
| CROWE | James William | Private | King's (Liverpool Regiment) | Born Dublin | Resided Anfield, Liverpool |
| CROWE | John Joseph | Private | Coldstream Guards | Born Dublin | Resided Fairfield |
| CROWLEY | George | Sergeant | Royal Army Service Corps | Born Dublin | Resided Kensington, W. |
| CROWLEY | William | Lance Sergeant | Royal Dublin Fusiliers | Born Rathmines, Dublin | |
| CROZIER | Gerard Irvine | Lieutenant | 6th Battalion, Leinster Regiment | | |
| CROZIER | William Magee | Lieutenant | 9th Battalion, Royal Inniskilling Fusiliers | | |
| CRUESS-CALLAGHAN | Stanislaus | Captain | 44th Wing, Royal Flying Corps | | |
| CRUISE | Henry Richard | Captain | King's African Rifles | | |
| CUEL | Harry Spencer | Private | Royal Welsh Fusiliers | Born Dublin | |
| CULLEN | James | Private | 78th Battalion, Canadian Infantry (Manitoba Regiment) | | |
| CULLEN | Christopher | Corporal | Royal Dublin Fusiliers | Born Dublin | |
| CULLEN | Edward | Private | Welsh Regiment | Born Dublin | Resided Dublin |
| CULLEN | Edward | Private | Irish Guards | Born Dublin | |
| CULLEN | Frederick | Rifleman | Royal Irish Rifles | Born Dublin | Resided Manchester |
| CULLEN | James | Private | Prince of Wales's Leinster Regiment (Royal Canadians) | Born Dublin | |
| CULLEN | James | Private | Royal Dublin Fusiliers | Born Dun Laoghaire, Co. Dublin | Resided Dun Laoghaire |
| CULLEN | John | Private | Royal Dublin Fusiliers | Born Dublin | |