| Surname | Forename | Rank | Unit | Born | Resided |
| MCKERNAN | Herbert | Private | Royal Dublin Fusiliers | Born Dublin | Resided Dublin |
| MCKERNON | James | Private | Prince of Wales's Leinster Regiment (Royal Canadians) | Born Killiney, Co. Dublin | |
| McKIBBIN | Charles Gordon | Private | 49th Battalion, Canadian Infantry (Alberta Regiment) | | |
| MCKIE | William Henry | Private | Household Cavalry and Cavalry of the Line (including Yeomanry) | Born Camberwell, London | Resided Dublin |
| MCKILLOP | Thomas | Private | Connaught Rangers | Born Dublin | Resided Malahide, Co. Dublin |
| MCKINLEY | Joseph | Sergeant | Royal Dublin Fusiliers | Born Dublin | |
| MCKITTRICK | Peter | Private | Irish Guards | Born Swords, Co. Dublin | |
| MCKNIGHT | William | Private | Connaught Rangers | Born Dublin | |
| MCLAUGHLIN | Bernard | Lance Sergeant | Irish Guards | Born Moynalty, Co. Dublin | |
| MCLEAN | George | Private | Princess Victoria's (Royal Irish Fusiliers) | Born Dublin | |
| MCLEAN | Henry | Private | Irish Guards | Born Dublin | Resided Ringsend, Co. Dublin |
| MCLEAN | Patrick | Private | Royal Dublin Fusiliers | Born Dublin | |
| MCLEAN | Robert | Corporal | Royal Army Service Corps | Born Dublin | Resided Belfast |
| MCLEAN | William | Driver | Royal Horse Artillery and Royal Field Artillery | Born St. Peter's, Dublin | |
| MCLEAN | John | Rifleman | Royal Irish Rifles | Born Cappoquin, Co. Waterford | Resided Blackrock, Co. Dublin |
| McLOUGHLIN | Andrew | Able Seaman | S.S. "Reward" (Swansea) | | |
| McLOUGHLIN | Chas | Fireman | S.S. "Tuscania" (Glasgow) | Born in Dublin | |
| MCLOUGHLIN | Edward | Corporal | Royal Irish Rifles | Born Dublin | |
| MCLOUGHLIN | George | Private | Alexandra, Princess of Wales's Own (Yorkshire Regiment) | Born Dublin | Resided Dublin |
| MCLOUGHLIN | John | Rifleman | Royal Irish Rifles | Born Dublin | |
| MCLOUGHLIN | John | Rifleman | Royal Irish Rifles | Born Dublin | |
| MCLOUGHLIN | Joseph | Private | Royal Dublin Fusiliers | Born Dublin | |
| MCLOUGHLIN | Laurence | Private | Royal Dublin Fusiliers | Born Dublin | |
| MCLOUGHLIN | Michael | Private | East Yorkshire Regiment | Born Dublin | |
| MCLOUGHLIN | Patrick | Lance Corporal | Lincolnshire Regiment | Born St. Thomas, Dublin | |
| MCLOUGHLIN | Patrick | Private | Royal Dublin Fusiliers | Born Dublin | |
| MCLOUGHLIN | Thomas | Gunner | Royal Garrison Artillery | Born Clontarf, Co. Dublin | |
| MCLOUGHLIN | Thomas | Private | Connaught Rangers | Born Dublin | Resided Dublin |
| McMAHON | Robert | Private | I Company, 10th Battalion, Canadian Infantry (Alberta Regiment) | | |
| MCMAHON | Anthony | Private | Connaught Rangers | Born Dun Laoghaire, Co. Dublin | Resided Blackrock, Co. Dublin |
| MCMAHON | Christopher | Private | Royal Munster Fusiliers | Born Balbriggan, Co. Dublin | Resided Balbriggan |
| MCMAHON | Francis | Gunner | Royal Garrison Artillery | Born Dublin | |
| MCMAHON | Frank | Private | Royal Dublin Fusiliers | Born Dublin | |
| MCMAHON | John | Private | Royal Dublin Fusiliers | Born Dublin | |
| MCMAHON | John | Gunner | Royal Garrison Artillery | Born Dublin | Resided Kelmaley, Co. Clare |
| MCMAHON | John | Private | Prince of Wales's Leinster Regiment (Royal Canadians) | Born Dublin | Resided Dublin |
| MCMAHON | Patrick | Private | Royal Dublin Fusiliers | Born Dublin | |
| MCMAHON | Patrick | Private | Royal Dublin Fusiliers | Born Lusk, Co. Dublin | |
| MCMAHON | Phillip | Lance Corporal | King's Own (Yorkshire Light Infantry) | Born Dublin | |
| MCMAHON | William | Private | Royal Dublin Fusiliers | Born Dublin | |
| MCMAHON | Christopher | Private | Princess Victoria's (Royal Irish Fusiliers) | Born Ennis, Co. Clare | Resided Dublin |
| MCMANIGAN | Christopher | Private | Royal Irish Regiment | Born Stillorgan, Co. Dublin | Resided Dundrum. Co. Dublin |
| McMANUS | John | Serjeant | 100th Regiment, Canadian Infantry | | |
| MCMATH | Francis | Company Sergeant Major | Corps of Royal Engineers | Born Donaghadee, Co. Down | Resided Dublin |
| MCMEEKIN | Alec | Private | Household Cavalry and Cavalry of the Line (including Yeomanry) | Born St. Paul's, Dublin | Resided Shorncliffe |
| MCMILLEN | Alexander | Private | Prince Of Wales's (North Staffordshire Regiment) | Born Shankill, Dublin | |
| MCMULLEN | Eric Newland | Private | Black Watch (Royal Highlanders) | Born Dublin | |
| MCMULLIN | Francis | Private | Household Cavalry and Cavalry of the Line (including Yeomanry) | Born Camteel, Antrim | Resided Dublin |
| MCMURTREY | Robert William | Private | Northamptonshire Regiment | Born Dublin, Ireland | |
| McNAIR | Robert Henry | Private | 13th Battalion, Canadian Infantry (Quebec Regiment) | Native of Dundalk, Ireland | |