| Surname | Forename | Rank | Unit | Born | Resided |
| ROGERS | Charles | Private | York And Lancaster Regiment | Born Dublin | Resided Burslem |
| ROGERS | Christopher | Acting Fitter Sergeant | Royal Horse Artillery and Royal Field Artillery | Born Dublin | |
| ROGERS | Christopher | Private | Royal Dublin Fusiliers | Born Dublin | |
| ROGERS | William John | Acting Sergeant | Cheshire Regiment | Born Dublin | Resided Manchester |
| ROGERS | Peter | Private | Duke of Wellington's (West Riding Regiment) | Born Colchester | Resided Rathmines, Dublin |
| ROLESTON | Robert | Private | Royal Dublin Fusiliers | Born Dublin | |
| RONAN | James | Private | Princess Victoria's (Royal Irish Fusiliers) | Born St. Anne's, Co. Dublin | |
| ROONEY | Gerald Christopher | Major | H.M.S. "Queen Mary" | | |
| ROONEY | William John | Able Seaman | H.M.S. "Tornado" | | |
| ROONEY | Frederick | Private | Royal Inniskilling Fusiliers | Born Dublin | |
| ROONEY | Frederick | Corporal | Royal Dublin Fusiliers | Born Dublin | |
| ROONEY | John | Lance Corporal | Royal Dublin Fusiliers | Born Dublin | |
| ROONEY | John | Private | Royal Munster Fusiliers | Born Blackrock, Co. Dublin | Resided Dublin |
| ROONEY | John | Private | Royal Army Medical Corps | Born Dublin | |
| ROONEY | Martin | Private | Prince of Wales's Leinster Regiment (Royal Canadians) | Born Dublin | |
| ROONEY | Terence | Private | Princess Victoria's (Royal Irish Fusiliers) | Born Dublin | |
| ROONEY | William | Private | Royal Dublin Fusiliers | Born Dublin | |
| ROPER | Reginald Trevor | Major | 1st Battalion, Dorsetshire Regiment | | |
| ROSBOROUGH | George | Rifleman | King's Royal Rifle Corps | Born St. George's, Dublin | Resided Mallow, Cork |
| ROSBOROUGH | Thomas | Private | Prince of Wales's Leinster Regiment (Royal Canadians) | Born Dublin | Resided Cork |
| ROSE | George Frederick | Gunner | Royal Horse Artillery and Royal Field Artillery | Born Dublin | |
| ROSE | Stephen George | Private | Royal Army Medical Corps | Born Clontarf, Dublin | |
| ROSS | Ernest Arthur | Private | 28th Battalion, Canadian Infantry (Saskatchewan Regiment) | | |
| ROSS | James Augustus | Sapper | 14th Field Company, Australian Engineers | Native of Dublin | |
| ROSS | Morgan Jones | Private | 39th Battalion, Australian Infantry, Australian Imperial Force | Born in Dublin | |
| ROUNTREE | James | Private | Machine Gun Corps | Born Dublin | Resided Clanroot |
| ROURKE | James Bernard | Private | H.M.S. "Indefatigable" | Born in Dublin | |
| ROURKE | Patrick | Able Seaman | Fishing Vessel "Geraldine" (Howth) | | |
| ROURKE | Thomas | Private | Royal Munster Fusiliers | Born St. James's, Dublin | Resided Dublin |
| ROWAN | Ernest Columbus | Private | Royal Warwickshire Regiment | Born Dublin | |
| ROWAN | Roy Melville | Private | Household Cavalry and Cavalry of the Line (including Yeomanry) | Born Dublin | Resided Charlestown |
| ROWAN | Terence | Private | Royal Munster Fusiliers | Born St. Mary's, Dublin | Resided Dublin |
| ROWE | Abraham | Private | Royal Fusiliers (City of London Regiment) | Born St. Mary's, Dublin | |
| ROWE | John | Private | Irish Guards | Born Clongeen, Co. Wexford | |
| ROXBURY | Thomas Henry | Private | King's (Shropshire Light Infantry) | Born Beggars Bush Barracks, Dublin | |
| ROY | John | Private | Royal Army Medical Corps | Born Dublin | |
| RUDDEN | Joseph | Private | Royal Dublin Fusiliers | Birthplace unknown | Resided Glasnevin, Dublin |
| RUDDOCK | A D | Corporal | Royal Inniskilling Fusiliers | | |
| RUMGAY | Richard | Private | Buffs (East Kent Regiment) | Born Drogheda, Co. Louth | Resided Clondalkin, Co. Dublin |
| RUSSELL | Christopher | Private | Prince of Wales's Leinster Regiment (Royal Canadians) | Born Dublin | |
| RUSSELL | Christopher | Corporal (Lance Sergeant) | Royal Irish Regiment | Born St. Michan's, Dublin | |
| RUSSELL | Christopher | Lance Corporal | Royal Dublin Fusiliers | Born Swords, Co. Dublin | |
| RUSSELL | James | Private | Essex Regiment | Born Kilmainham, Dublin | Resided Kilmainham |
| RUSSELL | John | Rifleman | Royal Irish Rifles | Born Dublin | |
| RUSSELL | Joseph | Private | Royal Dublin Fusiliers | Born Dublin | |
| RUSSELL | Peter | Private | Irish Guards | Born Dublin | |
| RUSSELL | Richard | Private | Royal Munster Fusiliers | Born Santry, Dublin | Resided Dublin |
| RUSSELL | Thomas | Sergeant | Royal Dublin Fusiliers | Born Dublin | |
| RUSSELL | William | Private | Prince of Wales's Leinster Regiment (Royal Canadians) | Born Dublin | |
| RUSSELL | Albert John | Sergeant | Household Cavalry and Cavalry of the Line (including Yeomanry) | Born Sial Kote, India | Resided Dublin |