| Surname | Forename | Rank | Unit | Born | Resided |
| HUNTER | James | Private | Royal Dublin Fusiliers | Born Athlone, Co. Westmeath | Resided Lucan, Co. Dublin |
| HURLEY | Victor Hubert | Private | Royal Warwickshire Regiment | Born Dublin | Resided Small Heath, Birmingham |
| HURTY | John | Private | Northumberland Fusiliers | Born Dublin | |
| HUTCHINSON | Andrew | Rifleman | Royal Irish Rifles | Born Dublin | Resided Manchester |
| HUTCHINSON | Charles | Private | Royal Dublin Fusiliers | Born Dublin | |
| HUTCHINSON | Frank | Sergeant | York and Lancaster Regiment | Born Dublin | |
| HUTCHINSON | John | Private | Royal Dublin Fusiliers | Born Dublin | |
| HUTCHINSON | Samuel | Lance Corporal | East Lancashire Regiment | Born Dublin | |
| HUTTON | John | Private | Irish Guards | Born Dundrum, Co. Dublin | Resided Dundrum, Co. Dublin |
| HUTTON | Louis | Private | Connaught Rangers | Born Dublin | Resided Clifden, Galway |
| HYLAND | Thomas | Stoker 1st Class | H.M.S. "Vanguard" | | |
| HYLAND | Joseph | Private | Princess Victoria's (Royal Irish Fusiliers) | Born Dublin | Resided Liverpool |
| HYLAND | William | Private | Prince of Wales's Leinster Regiment (Royal Canadians) | Born Dublin | |
| HYLAND | Michael Joseph | Private | Queen's (Royal West Surrey Regiment) | Born Waterford | Resided Dublin |
| HYNES | Christopher | Lance Corporal | Royal Dublin Fusiliers | Born Dublin | |
| HYNES | James | Private | Royal Dublin Fusiliers | Born Dublin | |
| HYNES | James Joseph | Private | Manchester Regiment | Born Dublin | Resided Beswick, Manchester |
| HYNES | Peter | Private | Connaught Rangers | Born Crumlin, Co. Dublin | Resided Crumlin |
| HYNES | Peter | Lance Corporal | Royal Dublin Fusiliers | Born Dublin | Resided Dublin |
| IGOE | Patrick | Private | Connaught Rangers | Born Dublin | Resided Galway |
| IMISON | Edward Henry | Sick Berth Attendant 2nd Class | H.M.S. "Natal" | Born at Dalkey, Dublin | |
| INGHAM | Claude Mary Leo | Second Lieutenant | 4th Battalion, Connaught Rangers, attached 9th Battalion, Royal Inniskilling Fusiliers | | |
| INGHAM | Joseph | Squadron Sergeant Major | Household Cavalry and Cavalry of the Line (including Yeomanry) | Born Dublin | Resided Leicester |
| INGLIS | Joseph | 2nd Steward | S.S. "Leinster" (Dublin) | Born in Dublin | |
| INGRAM | Robert | Private | Royal Inniskilling Fusiliers | Born Dublin | |
| INMAN | Arthur Walter Patrick | Colonel | Royal Army Medical Corps | | |
| INNES | Peter | Guardsman | Scots Guards | Born Dublin | Resided Dublin |
| IRELAND | Robert | Sergeant | Royal Munster Fusiliers | Born St. Mary's, Dublin | Resided Dublin |
| IRONS | Joseph | Private | Connaught Rangers | Born Dublin | Resided Dublin |
| IRVINE | James | Private | Royal Scots (Lothian Regiment) | Born Shankill, Co. Dublin | |
| IRWIN | Arthur Bolton | Lance Corporal | 7th Battalion, Canadian Infantry (British Columbia Regiment) | | |
| IRWIN | James | Rifleman | Royal Irish Rifles | Born Dublin | Resided Dun Laoghaire, Co. Dublin |
| IRWIN | Leo | Rifleman | Royal Irish Rifles | Born Dublin | |
| IVES | Albert | Rifleman | King's Royal Rifle Corps | Born Dublin, Ireland | Resided Crondall, Hants |
| JACKSON | William | Second Lieutenant | 11th Battalion, Royal Dublin Fusiliers, attached 23rd Battalion, Royal Fusiliers | | |
| JACKSON | John D. | Private | Royal Irish Regiment | Born Lucan, Co. Dublin | Resided Lucan |
| JACKSON | Joseph | Lance Corporal | Royal Dublin Fusiliers | Born Dublin | |
| JACKSON | Thomas | Lance Corporal | Irish Guards | Born Chapelizod, Co. Dublin | |
| JACKSON | Thomas | Rifleman | Rifle Brigade (The Prince Consort's Own) | Born Dublin | Resided Shepherd's Bush, Middx. |
| JACKSON | Thomas | Private | Royal Irish Regiment | Born St. Thomas, Dublin | |
| JACOB | Donald Mcclean | Private | 27th Battalion, Canadian Infantry (Manitoba Regiment) | | |
| JACOB | Arthur Leslie Hamilton | Lieutenant | 1st/18th Battalion, London Regiment (London Irish Rifles) | | |
| JAMES | William Raitt | Sergeant | Dorsetshire Regiment | Born Dublin | Resided Woolwich, Kent |
| JAMES | Albert | Private | Queen's Own (Royal West Kent Regiment) | Born Maidstone, Kent | Resided Dublin |
| JAMESON | Harold Gordon | Second Lieutenant | Corps of Royal Engineers | Born Limerick | |
| JAMIESON | James Theodore | Bandsman | Royal Fusiliers (City of London Regiment) | Born St. Marys, Dublin | Resided Brighouse |
| JAMIESON | William | Private | Princess Louise's (Argyll & Sutherland Highlanders) | Born Dublin | Resided Dublin |
| JEACLE | Philip | Private | 60th Battalion, Canadian Infantry | | |
| JEFFARES | Reginald Isaac | Private | Royal Dublin Fusiliers | Born Rosbarcon, New Ross, Co. Wexford | Resided Dalkey, Co. Dublin |
| JEFFERSON | Victor | Private | Royal Dublin Fusiliers | Born Belfast | Resided Dublin |