| Surname | Forename | Rank | Unit | Born | Resided |
| KIRWIN | Matthew | Private | Prince of Wales's Leinster Regiment (Royal Canadians) | Born Dublin | |
| KNEALE | George | Sapper | Corps of Royal Engineers | Born Liverpool | Resided Liverpool |
| KNIGHT | Joseph | Stoker 2nd Class | H.M.S. "Princess Irene" | | |
| KNIGHT | Thomas | Able Seaman | S.S. "Don Arturo" (London) | | |
| KNIGHT | Walter Henry | Able Seaman | H.M.S. "Surprise" | Native of Bournemouth | |
| KNIGHT | Charles Stanley | Rifleman | Rifle Brigade (The Prince Consort's Own) | Born Dublin | Resided Stockwell, Surrey |
| KNIGHT | John | Private | Royal Defence Corps | Born Dublin | Resided Upton Park |
| KNIGHT | Patrick | Private | Leicestershire Regiment | Born Ballbriggan, Co. Dublin | |
| KNIGHTLY | Edward William Winyard | Ordinary Seaman | H.M.S. "Vanguard" | | |
| KNOTT | Henry | Petty Officer Stoker | H.M.S. "Good Hope" | | |
| KNOWLES | Henry | Rifleman | King's Royal Rifle Corps | Born Arbour Hill, Dublin | |
| KNOWLES | Joseph William | Lance Corporal | Prince Of Wales's Own (West Yorkshire Regiment) | Born Dublin | |
| KNOX | Charles William | Private | 29th Battalion, Australian Infantry, Australian Imperial Force | Native of Killesher, Co. Fermanagh | |
| KUBLER | Charles | Private | Connaught Rangers | Born Dublin | Resided Cork |
| KYLE | Joseph | Private | King's Own Scottish Borderers | Born Dublin, Leinster | Resided Glasgow, Lanark |
| LACEY | Jeremiah | Driver | Royal Horse Artillery and Royal Field Artillery | Born Dublin | |
| LACEY | Michael | Acting Bombardier | Royal Horse Artillery and Royal Field Artillery | Born St. Michaels, Dublin | |
| LACY | Thomas Joseph | Second Lieutenant | B Battery, 48th Brigade, Royal Field Artillery | | |
| LAHIFFE | Frederick | Private | Royal Irish Regiment | Born St. Nicholas, Dublin | |
| LAINE | James | Private | Royal Dublin Fusiliers | Born Dublin | |
| LALBY | George | Lance Corporal | Royal Warwickshire Regiment | Born Dublin, Ireland | |
| LALLY | Thomas | Lance Sergeant | Royal Dublin Fusiliers | Born Drumcondra, Dublin | |
| LAMB | Michael | Private | Buffs (East Kent Regiment) | Born Dublin, Ireland | Resided Dublin, Ireland |
| LAMBE | Michael Joseph | Artificer Engineer (W.O.) | H.M.S. "Indefatigable" | | |
| LAMBE | James | Sergeant | Royal Dublin Fusiliers | Born Dublin | |
| LAMBE | John | Private | Prince of Wales's Leinster Regiment (Royal Canadians) | Born Dublin | |
| LAMBE | Richard | Private | Prince of Wales's Leinster Regiment (Royal Canadians) | Born Lusk, Co. Dublin | |
| LAMBERT | James | Lance Corporal | Princess Victoria's (Royal Irish Fusiliers) | Born Dublin | |
| LAMBERT | John | Private | Royal Dublin Fusiliers | Born Milltown, Co. Dublin | |
| LAMBERT | Joseph | Private | Connaught Rangers | Born Dublin | Resided Dublin |
| LAMBERT | Richard | Private | Duke of Cornwall's Light Infantry | Born Dublin | Resided Upton Park, Essex |
| LAMBERT | Thomas | Rifleman | Royal Irish Rifles | Born Dublin | |
| LAMBERT | Thomas | Private | Royal Dublin Fusiliers | Born Milltown, Co. Dublin | |
| LAMBERT | William | Private | Royal Dublin Fusiliers | Born Ballybrack, Co. Dublin | |
| LAMOND | William | Rifleman | Royal Irish Rifles | Born Dublin | |
| LAMONT | William | Private | Irish Guards | Born Dublin | |
| LANAGAN | Patrick | Private | Royal Dublin Fusiliers | Born Dublin | |
| LANCASTER-BELL | Ray | Lieutenant | 2nd Battalion, Royal Dublin Fusiliers | | |
| LANE | Michael | Private | Cameronians (Scottish Rifles) | Born Dublin | |
| LANE | Terence | Private | Prince of Wales's Leinster Regiment (Royal Canadians) | Born Dublin | |
| LANE-JOYNT | Albert William | Lieutenant | Dorsetshire Regiment, attached Machine Gun Corps | Native of Dublin | |
| LANG | John | Private | King's (Liverpool Regiment) | Born Dublin | Resided Dublin |
| LANG | John F. | Driver | Corps Of Royal Engineers | Born Dublin | |
| LANGAN | Ambrose | Private | 25th Battalion, Australian Infantry, Australian Imperial Force | Born at Dundrum, Co. Dublin | |
| LANGAN | George | Private | Royal Dublin Fusiliers | Born Dundrum, Co. Dublin | |
| LANGAN | Lawrence | Corporal | Royal Munster Fusiliers | Born Balbriggan, Co. Dublin | Resided Balbriggan |
| LANGAN | William | Private | Royal Dublin Fusiliers | Born Dublin | |
| LANGRIDGE | Albert | Private | Royal Inniskilling Fusiliers | Born Dublin | Resided Bray |
| LANGRON | John | Private | Royal Dublin Fusiliers | Born Dublin | Resided Dublin |
| LANIGAN | William | Private | Royal Inniskilling Fusiliers | Born Clondalkin, Co. Dublin | |