| Surname | Forename | Rank | Unit | Naval_Service |
| IMISON | Edward Henry | Sick Berth Attendant 2nd Class | H.M.S. "Natal" | Royal Navy |
| INGLIS | Joseph | 2nd Steward | S.S. "Leinster" (Dublin) | Mercantile Marine |
| JOHNSTON | William | Flight Sub-Lieutenant | | Royal Naval Air Service |
| JONES | George | Able Seaman and Lamps | S.S. "Adela" (Dublin) | Mercantile Marine |
| JONES | Michael | Able Seaman | S.S. "Memphian" (Liverpool) | Mercantile Marine |
| JONES | Thomas | Fireman | S.S. "Adela" (Dublin) | Mercantile Marine |
| JORDAN | Michael | Stoker 1st Class | H.M. Submarine "K5" | Royal Navy |
| KANE | Joseph | Able Seaman and Lamps | S.S. "Ottokar" (London) | Mercantile Marine |
| KAVANAGH | John | Seaman | S.S. "Polandia" (Liverpool) | Mercantile Marine |
| KAVANAGH | William | Boatswain (Bosun) | S.S. "Tangistan" (Swansea) | Mercantile Marine |
| KEALY | Dominick | Able Seaman | Anson Battalion, Royal Navy Division | Royal Naval Volunteer Reserve |
| KEANE | John Joseph | Able Seaman | H.M.S. "Warspite" | Royal Navy |
| KEARNEY | Herbert | Seaman | S.S. "Galway Castle" (London) | Mercantile Marine |
| KEEGAN | Laurance | Cattleman | S.S. "Adela" (Dublin) | Mercantile Marine |
| KEEGAN | Richard | Fireman and Trimmer | S.S. "Snowdon Range" (Liverpool) | Mercantile Marine |
| KEHOE | Francis | Seaman | S.S. "Leinster" (Dublin) | Mercantile Marine |
| KELLY | Christopher | Fireman | S.S. "Baku Standard" (Swansea) | Mercantile Marine |
| KELLY | Felix Ruddy | Able Seaman | H.M.S. "Queen Mary" | Royal Navy |
| KELLY | John | Able Seaman | S.S. "Memphian" (Liverpool) | Mercantile Marine |
| KELSEY | Henry | Cook | S.S. "Eveleen" (Belfast) | Mercantile Marine |
| KENDALL | Arthur | Able Seaman | S.S. "W. M. Barkley" (Belfast) | Mercantile Marine |
| KENNY | John Joseph | Airman 1st Class | H.M. Training Establishment H.M.S. "President II" | Royal Naval Air Service |
| KEOGH | P | Private | Deal Battalion, Royal Navy Division | Royal Marine Light Infantry |
| KILDEA | William | Seaman | S.S. "Mesaba" | Royal Naval Reserve |
| KING | Charles Leo | Second Cook | S.S. "Barrister" (Liverpool) | Mercantile Marine |
| KING | Ernest | Seaman | H.M.S. "Bulwark" | Royal Naval Reserve |
| KIRWAN | Edward | Private | Royal Marine Depot (Deal) | Royal Marine Light Infantry |
| KNIGHT | Joseph | Stoker 2nd Class | H.M.S. "Princess Irene" | Royal Navy |
| KNIGHT | Thomas | Able Seaman | S.S. "Don Arturo" (London) | Mercantile Marine |
| KNIGHT | Walter Henry | Able Seaman | H.M.S. "Surprise" | Royal Navy |
| KNOTT | Henry | Petty Officer Stoker | H.M.S. "Good Hope" | Royal Navy |
| LAMBE | Michael Joseph | Artificer Engineer (W.O.) | H.M.S. "Indefatigable" | Royal Navy |
| LARKIN | John | Stoker | H.M.S. "Goliath" | Royal Naval Reserve |
| LAWLER | William | Ordinary Seaman | H.M.S. "Hampshire" | Royal Navy |
| LEAHY | Anselm | Fireman and Trimmer | S.S. "Saint Ninian" (Glasgow) | Mercantile Marine |
| LEE | C | Fireman | S.S. "Lux" (London) | Mercantile Marine |
| LEONARD | Patrick | Able Seaman | S.S. "Aylevarroo" (Limerick) | Mercantile Marine |
| LITTLEWOOD | Ernest Albert Edward | Seaman | H.M. Trawler "Lydian" | Royal Naval Reserve |
| LONGMORE | Henry | Able Seaman | S.S. "Leinster" (Dublin) | Mercantile Marine |
| LORD-FLOOD | James Joseph Aloysius | Surgeon | H.M.S. "Anchusa" | Royal Naval Volunteer Reserve |