| | Commander | Warship commands |
 | | Kmdr ppor. | Jablonski, Brunon, ORP | ORP Wilk (N 63) |
 | | T/Lt. | Jackson, Charles Greville, RNR | HMS Meadowsweet (K 144) |
| | Lt.Cdr. | Jackson, Henry Elphinstone, RN | HMS Dornoch (J 173), HMS Fairy (J 403) |
 | | A/Cdr. | Jackson, Reginald, OBE, RCNVR | HMCS Kenogami (K 125), HMCS Orillia (K 119), HMCS Sault Ste. Marie (J 334) |
| | | Jackson, William, RANVR | HMAS Bendigo (J 187) |
| | Lt.Cdr. | Jackson, Alan Spencer, RN | HMS Undine (i) (N 48) |
 | | Lt.Cdr. | Jackson, Charles B., USN | USS Pampanito (383) |
| | Capt. | Jackson, Jr., William Bennett, USN | USS Cushing (DD 376), USS Providence (CL 82) |
| | Lt.Cdr. | Jackson, Sidney R., USNR | USS Underhill (DE 682) |
| | Cdr. | Jackson, Richmond R., USN | USS Osmus (DE 701) |
| | Cdr. | Jackson, Jr., A., USNR | USS Doherty (DE 14), USS Snowden (DE 246), USS Kyne (DE 744) |
| | T/A/Lt.Cdr. | Jackson, Christopher James, RNVR | HMS Gardenia (K 99) |
| | Lt.Cdr. | Jackson, John, DSC, RNR | HMS Heliotrope (K 03), HMS Swale (K 217) |
| | Cdr. | Jacob, Christopher Michael, DSC, RN | HMNZS Gambia (48) |
| | Lt.Cdr. | Jacobs, Tyrell Dwight, USN | USS Sargo (188) |
| | | Jacobsen, Thomas, | HNoMS Rose (K 102), HNoMS Potentilla (K 214) |
| | Capt. | Jacomb, Humphrey Benson, RN | HMS Royal Sovereign (05), HMS Nelson (28) |
| | | Jager De, C M, RNN | HNMS Flores (F 66) |
| | Lt. | Jagger, Shirley Elliston, RN | HMS Janus (F 53), HMS Castleton (I 23), HMS Wilton (L 128) |
| | T/A/Lt.Cdr. | James, Albert William, RNR | HMS Pennywort (K 111) |
| | Cdr. | James, Arthur Dyke Beauchamp, RN | HMS Duncan (D 99) |
| | Lt.Cdr. | James, Gwynne Howell Price, RD, RNR | HMS Flamingo (L 18 / U 18) |
| | | James, Ralph Gordon, RCNVR | HMCS Timmins (K 223) |
| | A/Capt. | James, Ughtred Henry Ramsden, RN | HMS Lowestoft (L 59 / U 59), HMS Falmouth (L 34 / U 34), HMS Speaker (D 90) |
| | Lt. | James, Peter Vernon, RNR | HMS Scout (H 51), HMS Scout (H 51) |
| | Capt. | James, Percival Henry Gwynne, RN | HMS Capetown (D 88), HMS Capetown (D 88) |
| | Capt. | James, Jules, USN | USS Edsall (i) (DD 219), USS Philadelphia (CL 41) |
| | T/Lt. | James, Herbert Charles, RNR | HMS Barflake (Z 184) |
| | T/A/Lt.Cdr. | Jameson, Robert Hudson, RNR | HMS Linaria (K 282), HMS Bann (K 256) |
| | Lt.Cdr. | Janney, Frederick Emery, USN | USS Hackleback (295) |
| | Cdr. | Jarrett, Harry Bean, USN | USS Morris (DD 417) |
| | | Jarvis, Samuel Arthur, RNR | HMS Wedgeport (J 139) |
| | | Jarvis, John Patrick, RCNVR | HMCS Agassiz (K 129) |
| | T/Lt. | Jarvis, Robert A., RCNVR | HMCS Sherbrooke (K 152), HMCS Stellarton (K 457) |
| | Lt.Cdr. | Jarvis, Benjamin Campbell, USN | USS Baya (318) |
| | Cdr. (retired) | Jauncey, John Henry, RN | HMS Versatile (D 32) |
| | Cdr. | Jay, Alan David Hastings, DSC, DSO, RN | HMS Gossamer (J 63), HMS Leda (J 93), HMS Harrier (J 71) |
| | Lt. | Jay, Richard Lionel, RN | HMS H 34 (N 34), HMS Tiptoe (P 332) |
| | Capt. | Jeans, Francis William Hugh, RN | HMS Southampton (83) |
| | Capt. | Jefferis, John, DSC, RN | HMS Exmoor (ii) (L 08) |
| | Lt. | Jeffery, W. R. H., RNR | HMS Shearwater (L 39 / K 39) |
| | T/Lt.Cdr. | Jeffrey, Douglas George, DSO, RCNR | HMCS Ville de Quebec (K 242), HMCS Hamilton (I 24), HMCS Teme (K 458), HMCS Lauzon (K 371) |
| | | Jellema, Tobias, RNN | HNMS Soemenep |
| | | Jelley, William Charles, RN | HMS Fraserburgh (J 124) |
| | Capt. | Jellicoe, Christopher Theodore, DSC, DSO, RN | HMS Winchelsea (D 46), HMS Southwold (L 10), HMS Jackal (F 22), HMS Colombo (D 89) |
| | Cdr. | Jenkins, Humphrey Leoline, DSC, RN | HMS Larne (ii) (J 274), HMS Welfare (J 356) |
| | Capt. | Jenkins, Samuel Power, USN | USS Perkins (DD 377), USS Atlanta (i) (CL 51) |
| | Lt.Cdr. | Jenkins, Ralph Grosvenor, DSC, RN | HMS Crane (U 23) |
| | Cdr. | Jenks, Robert Fergus, DSC, RN | HMS H 32 (N 32), HMS Vega (L 41), HMS Atherstone (L 05), HMS Quail (G 45) |
| | Cdr. | Jenks, William Corfield, RN | HMS Scott (J 79) |
| | Cdr. | Jennings, Richard Borthwick, DSO, RN | HMS Sidmouth (J 47) |
| | Lt.Cdr. | Jennings, William C., USN | USS Lee Fox (DE 65), USS McNulty (DE 581) |
| | Cdr. | Jennings, Carter Brooks, USN | USS McDermut (DD 677) |
| | Capt. | Jennings, Ralph Edward, USN | USS Copahee (CVE 12), USS Yorktown (ii) (CV 10) |
| | Lt.Cdr. | Jensen, Marvin John, USN | USS Puffer (268) |
| | Capt. | Jephson, Selwyn Victor, RN | HMS Mackay (D 70) |
| | A/Lt.Cdr. | Jermain, Denis, RN | HMS Manners (K 568), HMS Duckworth (K 351) |
| | Cdr. (retired) | Jerome, Henry Joseph Alexander Savil, RN | HMS Speedy (J 17), HMS Courier (J 349) |
| | Cdr. | Jessel, Richard Frederick, DSC, DSO, RN | HMS Legion (G 74), HMS Mackay (D 70), HMS Zealous (R 39) |
| | Lt.Cdr. | Jewell, Norman Limbury Auchinleck, DSC, RN | HMS L 27 (N 27), HMS Seraph (P 219), HMS Sea Nymph (P 223), HMS Tactician (P 314), HMS Trespasser (P 312), HMS Sportsman (P 229) |
| | Cdr. | Jewitt, Dermod James Boris, DSC, RN | HMS Vimy (D 33), HMS Winchester (L 55), HMS Meteor (G 73) |
| | Cdr. | Jocelyn, Robert William, RN | HMS Achates (i) (H 12), HMS Panther (G 41), HMS Quality (G 62) |
| | | Jodkowski, Edmund, ORP | |
| | | Johannesen, Folke Hauger, | HNoMS St Albans (I 15) |
| | Lt.Cdr. | Johansen, Jr., Gustave Norman, USN | USS Halford (DD 480) |
| | Lt. | Johansen, J. E., USNR | USS Crouter (DE 11), USS Francis M. Robinson (DE 220) |
| | Capt. | John, Caspar, RN | HMS Ocean (68) |
| + | Lt.Cdr. | Johns, Arthur Henry Tyndall, DSO, RN | HMS Rockingham (G 58), HMS Achates (i) (H 12) |
 | | | Johns, George Alfred, RANR(S) | HMAS Cootamundra (J 316) |
| | Lt. | Johns, John G., USN | USS Seadragon (194) |
| | Lt.Cdr. | Johnsen, William H., USN | USS David W. Taylor (DD 551) |
| | Cdr. | Johnson, Arthur, RNVR | HMS Campion (K 108), HMS Cuckmere (K 299) |
| | Lt.Cdr. | Johnson, Arthur Oswald, RN | HMS Skate (H 39), HMS Ambuscade (D 38) |
| | Lt.Cdr. | Johnson, Bernard Dodds Leitch, RCNR | HMCS Agassiz (K 129), HMCS Columbia (I 49) |
| | T/A/Lt.Cdr. | Johnson, Frank Fitzpatrick, RANVR | HMS Marguerite (K 54), HMS Aster (K 188), HMS Nigella (K 19) |
| | T/Lt. | Johnson, Harold, RNR | HMS Lysander (J 379), HMS Mandate (J 438) |
| | Lt. | Johnson, James, DSC, RNR | HMS Verbena (K 85) |
| | Lt.Cdr. | Johnson, Kenneth Lorne, RCNVR | HMCS Fennel (K 194) |
| | T/Lt.Cdr. | Johnson, Rendell James Godschal, RCNVR | HMCS Brandon (K 149), HMCS Rosthern (K 169), HMCS Long Branch (K 487) |
| | T/Lt. | Johnson, Gordon Harold, RCNVR | HMCS Cobourg (K 333) |
| | Cdr. | Johnson, Raymond W., USN | USS Herring (233), USS Blackfish (221) |
| | Lt. | Johnson, Franklin Oliver, USN | USS Snapper (185) |
| | Cdr. | Johnson, Carl Arthur, USN | USS Flounder (251) |
| | Capt. | Johnson, Lee Payne, USN | USS Tuscaloosa (CA 37) |
| | Lt.Cdr. | Johnson, Stephen L., USN | USS Segundo (398) |
| | Capt. | Johnson, Douglas Pollock, USN | USS Fanshaw Bay (CVE 70) |
| | Lt.Cdr. | Johnson, Felix Leslie, USN | USS Lang (DD 399), USS Springfield (CL 66) |
| | Cdr. | Johnson, Francis J., USN | USS Callaghan (DD 792) |
| | Cdr. | Johnson, Frank Lesher, USN | USS Fletcher (DD 445), USS Purdy (DD 734) |
| | Cdr. | Johnson, Clifford Arthur, USN | USS Tolman (DM 28) |
| | Lt.Cdr. | Johnson, R. W., USN | USS Kendal C. Campbell (DE 443) |
| | Lt.Cdr. | Johnson, Dwight Lyman, USN | USS Miller (DD 535) |
| | Capt. | Johnson, William David, USN | USS Suwannee (CVE 27) |
| | Cdr. | Johnson, G. W., USN | USS Moffett (DD 362) |
| | Lt.Cdr. | Johnson, Francis Nelson Blois, RD, RNR | HMS H 44 (N 44) |
| | Cdr. | Johnston, Duncan Lachlan, RN | HMS Uganda (66), HMS Fairy (J 403), HMS Friendship (J 398) |
| | Lt.Cdr. | Johnston, Robert, RNR | HMS Louis (K 515), HMS Glenarm (K 258), HMS Loch Gorm (K 620) |
| | Lt.Cdr. | Johnston, Thomas, RN | HMS Charlestown (I 21), HMS Vansittart (D 64) |
| | | Johnston, W. D. F., RCNR | HMCS Brantford (K 218) |
| | Lt.Cdr. | Johnston, Harry Darlington, USN | USS Preble (DM 20), USS Cony (DD 508), USS Riley (DE 579) |
| | Lt.Cdr. | Johnston, Jr., Means, USN | USS Hanna (DE 449) |
| | T/A/Lt.Cdr. | Joliffe, William Swire, RNR | HMS Cyclamen (K 83), HMS Lancaster Castle (K 691) |
| | | Jolliffe, William Swire, RNR | |
| | | Jolly, Leonard, DSO, RNVR | HMS Elfreda (J 402) |
| + | Cdr. | Jolly, Richard Frank, RN | HMS Mohawk (F 31) |
| | Lt.Cdr. | Jolly, John Chapman, USN | USS Shubrick (i) (DD 268) |
| | Cdr. | Jonas, Ronald McClellan Powning, DSC, RN | HMS Triad (N 53), HMS Fernie (L 11), HMS Jackal (F 22) |
| | T/Lt. | Jonckheere, Remy J., RNR | HMS Buttercup (K 193) |
| | T/Lt. | Jones, Alex Charles, RCNR | HMCS Oakville (K 178) |
| | Cdr. | Jones, Alun, RN | HMS Jason (J 99) |
| | Capt. | Jones, Basil, DSC, DSO, RN | HMS Ivanhoe (D 16), HMS Isis (D 87), HMS Pakenham (G 06), HMS Isis (D 87), HMS Tartar (F 43) |
| | | Jones, David Albert Trevor, RNVR | HMS Mandate (J 438) |
| | Lt.Cdr. | Jones, Eric Lister, DSC, RN | HMS Wrestler (D 35), HMS Boreas (H 77), HMS Serapis (G 94) |
| | | Jones, Ernest Usher, RCNVR | HMCS Nanaimo (K 101) |
| | | Jones, Francis James, RCNVR | HMCS Mimico (K 485) |
| | Lt.Cdr. | Jones, Frederick John Gwynn, RD, RNR | HMS Clarkia (K 88), HMS Rowley (K 560) |
| | Cmdre. | Jones, George Clarence, RCN | HMCS Ottawa (i) (H 60), HMCS Assiniboine (I 18) |
| | A/Lt.Cdr. | Jones, John Ivor, DSC, DSO, RNR | HMS Hyacinth (K 84), HMS Hyacinth (K 84), HMS Primula (K 14), HMS Aldenham (L 22), HMS Byard (K 315) |
| | Cdr. | Jones, John Treasure, RD, RNR | HMS Sunflower (K 41), HMS Wellington (L 65 / U 65), HMS Bayntun (K 310), HMS Dart (K 21) |
| + | | Jones, William James, RCNR | HMCS Shawinigan (K 136) |
| | | Jones, John Dalton, RN | HMS Michael (J 444) |
| | Capt. | Jones, Randall, USN | USS Tuscaloosa (CA 37) |
| | Lt.Cdr. | Jones, Herbert M., USN | USS Jobb (DE 707) |
| | Lt.Cdr. | Jones, W. F., USN | USS Peiffer (DE 588) |
| | Cdr | Jones, Arthur Collins, USNR | USS Chaffee (DE 230) |
| | Lt.Cdr. | Jones, Wilbur Glenn, USN | USS Shaw (DD 373) |
| | Lt.Cdr. | Jones, Herbert Sydney, USN | USS Badger (DD 126) |
| + | | Jong De, Hendrik, RNN | HNMS Eland Dubois |
| | | Jong De, Sako Lambertus, RNN | HNMS Friso (ii) (K 00), HNMS Soemba (T 199) |
| + | | Joosse, Pieter, RNN | HNMS M 3 |
| | Lt.Cdr. | Jordan, James L., USN | USS Finback (230) |
| | Lt.Cdr. | Jordy, J. J., USNR | USS Foss (DE 59), USS Earl V. Johnson (DE 702) |
| | Capt. | Josselyn, John William, DSC, RN | HMS Intrepid (D 10), HMS Caradoc (D 60), HMS Hawkins (D 86) |
| | A/Lt.Cdr. | Joy, Kenneth Hugh, RD, RNR | HMS H 28 (N 28), HMS P 552 (P 552) |
| | Lt. | Joyce, Patrick Nicholas, RN | HMS H 44 (N 44), HMS Test (K 239) |
| | Lt.Cdr. | Joyce, Allen R., USN | USS Grenadier (i) (210) |
| | T/Lt.Cdr. | Judges, Ronald Alfred, RCNVR | HMCS Cobalt (K 124), HMCS Winnipeg (J 337), HMCS Cap de la Madeleine (K 663) |
| | Lt.Cdr. | Judson, C. S., USN | USS Koiner (DE 331) |
| | Lt.Cdr. | Juhlin, Lawrence Virginius, USN | USS Shad (235) |
| | Cdr. | Jukes, Herbert Lollis, USN | USS S-27 (132), USS Kingfish (234), USS Cutlass (478) |
| | | Julian, Geoffrey Court, RNZNVR | HMS Dacres (K 472), HMS Mounsey (K 569) |
| | Cdr. | Juniper, William Anthony, RN | HMS Whitshed (D 77), HMS Worcester (D 96), HMS Zentih (R 95) |
| + | Lt. | Jupp, Michael Hugh, DSC, RN | HMS H 33 (N 33), HMS Syrtis (P 241) |