| Surname | Forename | Rank | Unit | Born | Resided |
| HOGAN | Martin | Private | Household Cavalry and Cavalry of the Line (including Yeomanry) | Born Little Bray, Dublin | Resided Collen |
| HOGAN | Michael | Private | Royal Welsh Fusiliers | Born Dublin | |
| HOGAN | Patrick | Private | Royal Inniskilling Fusiliers | Born Coombe, Dublin | Resided Belfast |
| HOGAN | Thomas | Private | Royal Dublin Fusiliers | Born Dublin | Resided Dublin |
| HOGAN | William | Private | Royal Irish Regiment | Born St. Mary's, Dublin | Resided Warrington, Lancs |
| HOGAN | William | Private | Prince of Wales's Leinster Regiment (Royal Canadians) | Born Killossorty, Co. Waterford | Resided Kingstown, Co. Dublin |
| HOLAHAN | Thomas | Private | Royal Inniskilling Fusiliers | Born St. Thomas, Dublin | |
| HOLAHAN | John | Pioneer | Corps of Royal Engineers | Birthplace unknown | Resided Dublin |
| HOLLAND | John Francis | Ordinary Seaman | S.S. "Ivemia" (Liverpool) | Born in Dublin | |
| HOLLAND | Gerald Edward | Brigadier General | Royal Engineers | | |
| HOLLAND | Edward | Private | Princess Victoria's (Royal Irish Fusiliers) | Born Dublin | |
| HOLLAND | Leo | Sergeant | Royal Dublin Fusiliers | Born Dublin | |
| HOLLAND | James | Private | Princess Victoria's (Royal Irish Fusiliers) | Born Carlow | Resided Dublin |
| HOLLAND | J | Private | Royal Dublin Fusiliers | | |
| HOLLWEYMILLER | William George Edward | Private | Royal Fusiliers (City of London Regiment) | Born Dublin | Resided W. Ealing |
| HOLM | John | Private | Royal Dublin Fusiliers | Born Rathmines, Dublin | |
| HOLMES | Henry | Rifleman | Royal Irish Rifles | Born Dublin | Resided Tallaght, Co. Dublin |
| HOLMES | Peter | Private | Seaforth Highlanders (Rossshire Buffs, the Duke of Albany's) | Born Dublin, Co. Antrim | |
| HOLMES | Thomas | Private | Loyal North Lancashire Regiment | Birthplace unknown | Resided Dublin |
| HOLOHAN | Alfred | Private | Royal Dublin Fusiliers | Born Dublin | |
| HOLT | John Mountjoy | Third Engineer | S.S. "Algarve" (London) | Born at Dún Laoghaire, Dublin | |
| HOLT | John Henry | Private | Prince Of Wales's (North Staffordshire Regiment) | Born Dublin | |
| HOLTEN | David | Private | Royal Dublin Fusiliers | Born Dublin | |
| HOLTON | Thomas | Private | Royal Irish Regiment | Born Dublin | |
| HOMAN | Arthur Douglas | Major | 1st Battalion, Royal Irish Regiment, attached 7th Battalion, Oxfordshire and Buckinghamshire Light Infantry | Native of Dublin | |
| HONE | Nathaniel Frederick | Lieutenant | 3rd Battalion, attached 9th Battalion, Royal Irish Rifles | | |
| HOOKE | Patrick | Corporal | Princess Victoria's (Royal Irish Fusiliers) | Born Dublin | |
| HOOLIGAN | Joseph | Acting Sergeant | Royal Dublin Fusiliers | Born Dublin | |
| HOOPER | Frederick | Private | Royal Scots (Lothian Regiment) | Born Dublin | Resided Glasgow |
| HOPE | William Edward | Lieutenant | Irish Guards | | |
| HOPE | William Joseph | Private | Royal Army Service Corps | Born Dublin | Resided Dublin |
| HOPKINS | Herbert Horace | Lieutenant | South African Special Service Company | Born at Dublin | |
| HOPKINS | Joseph | Able Seaman | S.S. "Hare" (Liverpool) | Born at Ringsend, Co. Dublin | |
| HOPKINS | Robert | Saddler Corporal | Household Cavalry and Cavalry of the Line (including Yeomanry) | Born Carlow | Resided Dublin |
| HOPPER | Arthur | Corporal | Manchester Regiment | Born Dublin | Resided Leeds |
| HORAN | James | Gunner | Royal Horse Artillery and Royal Field Artillery | Born Dublin | |
| HORAN | James | Private | Labour Corps | Born Dublin | |
| HORAN | Michael | Sergeant | Royal Dublin Fusiliers | Born Dublin | |
| HORNE | John | Private | Composite Battalion, Canadian Militia | | |
| HORNER | Percy | Private | Royal Inniskilling Fusiliers | Born Ballybrack, Co. Dublin | Resided Ballybrack |
| HORRIGAN | Vincent | Private | Princess Victoria's (Royal Irish Fusiliers) | Born Dublin | |
| HORSBURGH | Samuel Christopher | Bandsman | Northamptonshire Regiment | Born St. Paul's, Dublin | |
| HOSKINS | Louis | Private | Lancashire Fusiliers | Born Dublin | |
| HOWARD | George | Private | Royal Dublin Fusiliers | Born Dublin | |
| HOWARD | George Edward | Lance Corporal | Essex Regiment | Born Dublin | Resided Bermondsey, Surrey |
| HOWARD | Herbert James | Corporal | Queen's Own (Royal West Kent Regiment) | Born Glenmarson, Dublin, Ireland | |
| HOWARD | James | Private | Royal Welsh Fusiliers | Born St. Thomas, Dublin | |
| HOWARD | John | Private | Royal Dublin Fusiliers | Born Dublin | |
| HOWARD | Michael | Private | Royal Dublin Fusiliers | Born Dublin | |
| HOWARD | Michael | Private | Royal Dublin Fusiliers | Born Dublin | |