| Name | Place | Societies | Date of death |
| Rifleman Richard Bloodworth Machin | Bicker | Lincoln Diocesan Guild | 07/06/1916 |
| Private Murray Edward Gordon Mackman | Boston, USA | Lincoln Diocesan Guild | 01/09/1918 |
| Richard Mackman | Spalding | | 16/08/1915 |
| Serjeant William Maddison | Fulney | Lincoln Diocesan Guild | 20/04/1916 |
| Ernest Edward Maisey | Tetbury | Gloucester and Bristol Diocesan Association | 21/03/1918 |
| Captain Arthur Oswald Major | Bridgwater | Bath & Wells Diocesan Association | 23/11/1917 |
| Private Harry Arthur Male | Almeley | Hereford Diocesan Guild | 27/07/1918 |
| Shoeing Smith Corporal Percy Malpas | Leintwardine | Hereford Diocesan Guild | 23/04/1916 |
| Private James Samuel Mann | Leominster | Hereford Diocesan Guild | 30/03/1918 |
| Lance Corporal William Henry Marchant | Berwick St John | Salisbury Diocesan Guild | 02/11/1917 |
| Second Lieutenant Arthur Cecil Marden | Marston Magna | Bath & Wells Diocesan Association | 11/12/1917 |
| Private Walter Eric Markey | Burstow | Surrey Association | 31/10/1914 |
| Gunner Walter Markham | Stone, Oxon | Oxford Diocesan Guild | 21/08/1917 |
| Private Harry Harmer Marklove | Foy | Hereford Diocesan Guild | 06/11/1917 |
| Private William Marsden | Misson | North Notts. Association | 26/09/1917 |
| Frederick Charles Marsh | Glastonbury | Bath & Wells Diocesan Association | 23/03/1918 |
| Arthur G Marshall | Milton next Gravesend | Kent County Association | 15/09/1916 |
| Private George Marshall | Gosberton | Lincoln Diocesan Guild | 01/07/1916 |
| Corporal Frank Tingey Martin | Oxhey | Ancient Society of College Youths | 30/07/1915 |
| Private Lewis John Martin | Wickham Skeith | Norwich Diocesan Association | 13/04/1917 |
| Private Charles Mason | Tarrington | Hereford Diocesan Guild | 03/05/1918 |
| Private Charles Frederick Matthams | Great Waltham | Essex Association | 08/10/1915 |
| Private Thomas Ewart Max | Newport | Llandaff & Monmouth Diocesan Association | 14/10/1918 |
| Private Edward Henry May | Shipbourne | Kent County Association | 25/08/1917 |
| Driver William Arthur May | Bristol | Gloucester and Bristol Diocesan Association | 16/11/1917 |
| Private William Maynard | Redhill | Surrey Association | 25/09/1915 |
| Frederick Robert Mayne | Marshfield | Llandaff & Monmouth Diocesan Association | 07/07/1916 |
| Fredrick Charles McCarthy | Stranton | Durham and Newcastle Diocesan Association | 01/01/1919 |
| Private John Willoughby McClean | Kilkenny | Irish Association | 23/04/1915 |
| James McConnell | Manchester Cathedral | Lancashire Association | 07/07/1916 |
| Lieutenant Victor Comley McKiever | Johannesburg | Cambridge University Guild | 28/05/1915 |
| Rifleman William McLachlan | Sunderland | Durham and Newcastle Diocesan Association | 03/11/1916 |
| Second Lieutenant Douglas William McMichael | Oundle - cwgc | Cambridge University Guild | 20/04/1916 |
| Private Ernest McWilliam | Rothwell | Yorkshire Association | 03/11/1918 |
| Private Harold Mead | Bratton | Salisbury Diocesan Guild | 12/03/1915 |
| William Percy Mead | Stowmarket | Norwich Diocesan Association | 25/09/1917 |
| Sapper Laurence Meager | Bletchley | Oxford Diocesan Guild | 28/09/1917 |
