| Surname | Forename | Rank | Unit | Born | Resided |
| HERNE | Edward | Private | Royal Dublin Fusiliers | Born Dublin | |
| HESELTINE | John R | Able Seaman | Royal Navy | | |
| HEWSON | Charles | Lance Corporal | Royal Dublin Fusiliers | Born Dublin | |
| HEWSON | Thomas | Private | South Wales Borderers | Born St. Micham's, Dublin, Ireland | |
| HICKEY | James | Greaser | S.S. "Leinster" (Dublin) | Born at Dún Laoghaire | |
| HICKEY | James | Private | Royal Dublin Fusiliers | Born Dublin | |
| HICKEY | John | Rifleman | Royal Irish Rifles | Born Dublin | |
| HICKEY | Joseph | Private | Royal Army Medical Corps | Born Dublin | |
| HICKEY | Michael | Private | Royal Dublin Fusiliers | Born Dublin | |
| HICKEY | Patrick | Private | Household Cavalry and Cavalry of the Line (including Yeomanry) | Born St. Andrews, Dublin | Resided Dublin |
| HICKMAN | Poole Henry | Captain | 7th Battalion, Royal Dublin Fusiliers | | |
| HICKS | Henry | Driver | 4th Brigade, Canadian Field Artillery | | |
| HICKS | John George | Private | Household Cavalry and Cavalry of the Line (including Yeomanry) | Born St. George, Dublin | Resided Crumlin, Co. Dublin |
| HIFLE | George Raymond | Sapper | 3rd Field Company, Canadian Engineers | Native of Tralee, Co. Kerry | |
| HIGGINS | Andrew | Rifleman | Royal Irish Rifles | Born Dublin | |
| HIGGINS | Denis | Private | Royal Dublin Fusiliers | Born Kilternan, Dublin | |
| HIGGINS | James | Private | Royal Irish Regiment | Born St. Peter's, Dublin | |
| HIGGINS | Robert | Private | Suffolk Regiment | Born Dublin | |
| HIGGINS | Patrick | Private | Princess Victoria's (Royal Irish Fusiliers) | Born Kells, Co. Meath | Resided Dublin |
| HILL | Arthur George | Private | 22nd Battalion, Australian Infantry, Australian Imperial Force | Native of Dublin | |
| HILL | Charles | Rifleman | Royal Irish Rifles | Born Dublin | |
| HILL | Denis | Private | Princess Victoria's (Royal Irish Fusiliers) | Born Dublin | Resided Saltcoats, Ayrshire |
| HILL | John | Private | Royal Dublin Fusiliers | Born Dublin | Resided Dublin |
| HILL | Marshall Alfred | Acting Lance Corporal | Royal Dublin Fusiliers | Born Dublin | |
| HILL | Patrick | Private | Prince of Wales's Leinster Regiment (Royal Canadians) | Born Dublin | |
| HILL | Thomas | Private | Royal Dublin Fusiliers | Born Dublin | |
| HILL | William | Private | Prince of Wales's Leinster Regiment (Royal Canadians) | Born Dublin | |
| HILLAS | Arthur Benedict Edward | Captain | Gordon Highlanders | | |
| HILLHOUSE | Robert Forbes | Acting Corporal | Royal Dublin Fusiliers | Born Dublin | |
| HILTON | David | Sapper | 15th Field Company, Australian Engineers | Native of Dublin | |
| HILTON | Henry | Private | Prince of Wales's Leinster Regiment (Royal Canadians) | Native of Dublin | Resided Dublin |
| HINDS | Ralph William Gore | Lieutenant | 2nd Battalion, Royal Inniskilling Fusiliers | | |
| HINES | William Flynn | Lance Corporal | Royal Dublin Fusiliers | Born Dublin | Resided Hull |
| HINKSMAN | Mark | Lance Corporal | Royal Irish Rifles | Born Dublin | |
| HIRON | Ernest | Private | 3rd Regiment (Infantry), South African Infantry | | |
| HITCHINS | Henry Mayne | Second Lieutenant | Royal Irish Rifles | | |
| HOBBS | John | Private | Royal Irish Regiment | Born Dun Laoghaire, Co. Dublin | |
| HOEY | Frederick Cyril | Second Lieutenant | Royal Air Force | | |
| HOEY | Edward | Sergeant | Royal Dublin Fusiliers | Born Dublin | Resided Dublin |
| HOEY | Edward | Private | Royal Dublin Fusiliers | Born Dublin | |
| HOEY | James | Lance Corporal | Royal Dublin Fusiliers | Born Dublin | |
| HOEY | Thomas | Private | Royal Dublin Fusiliers | Born Dublin | |
| HOEY | George John | Rifleman | Royal Irish Rifles | Born Rockcorry, Co. Monaghan | Resided Terenure, Co. Dublin |
| HOGAN | Daniel Jeremiah | Petty Officer Telegraphist | H.M.S. "Defence" | | |
| HOGAN | John Joseph | Carpenter | S.S. "Hollington" (London) | Born in Dublin | |
| HOGAN | Edmund Francis | Private | Royal Dublin Fusiliers | Born Dublin | |
| HOGAN | Francis | Private | Royal Dublin Fusiliers | Born Dublin | |
| HOGAN | Henry | Driver | Royal Horse Artillery and Royal Field Artillery | Born Dublin | |
| HOGAN | John | Gunner | Royal Garrison Artillery | Born Dublin | |
| HOGAN | John | Private | Royal Dublin Fusiliers | Born Dublin | |