| Last Name | First Name | Rank/Rate | Loss Date | Boat, Hull# | Cause |
|---|---|---|---|---|---|
| Maben | Charles G | RM2 | 28-Mar-45 | TRIGGER (SS-237) | Sunk in area 32° 16'N to 30° 40'N by 132° 05'E to 127° 50'E. |
| Mabin | William T | SM1 | 4-May-45 | LAGARTO (SS-371) | Sunk off Malay Coast in or near the Gulf of Siam. |
| Mabry Jr. | Templeton N | EN2 | 10-Apr-63 | THRESHER (SSN-593) | Lost when submarine sank while on sea trials |
| Mabuti | Santiago P. | CK2 | 9-Sep-43 | GRAYLING (SS-209) | Sunk in or near Tablas Strait, RPI |
| MacKenzie Jr. | George K | LCDR(CO) | 15-Mar-43 | TRITON (SS-201) | Sunk somewhere between Rabaul and Shortlands Basin. |
| MacAlman | Stuart E. | PhM1 | 11-Oct-43 | WAHOO (SS-238) | Sunk in or near La Perouse Strait (Northern Japan) or along northwest coast of Honshu. |
| MacCartney | James W | EM3 | 19-Nov-43 | SCULPIN (SS-191) | Sunk north of Groluk Island near Truk |
| MacGowen | Thomas J.K. | MoMM1 | 11-Oct-43 | WAHOO (SS-238) | Sunk in or near La Perouse Strait (Northern Japan) or along northwest coast of Honshu. |
| MacIntyre | James C. | F1 | 24-Oct-44 | SHARK (SS-314) | Sunk in channel midway between Hainan and Bashi Channel |
| Mack | Robert L | RM3 | 1-Jun-44 | HERRING (SS-233) | Sunk within shore battery range of Point Tagan, Matsuwa Island, in Kuriles. |
| MacLachlan | Robert W. | RM1 | 24-Jan-42 | S-26 (SS-131) | Sank after ramming by PC460 Gulf of Panama |
| MacVane | Arthur L | SM2 | 28-Mar-45 | TRIGGER (SS-237) | Sunk in area 32° 16'N to 30° 40'N by 132° 05'E to 127° 50'E. |
| Macy | Marvin R. | RM2 | 16-Feb-43 | AMBERJACK (SS-219) | Sunk off Rabaul |
| Madden | Charles A | EMC | 1-Sep-43 | POMPANO (SS-181) | Sunk off the northeast coast of Honshu |
| Madden Jr. | John H | TM3 | 12-Jan-45 | SWORDFISH (SS-193) | Sunk near Yaku Island off Kyushu |
| Maddox | John W | S1 | 1-Dec-43 | CAPELIN (SS-289) | Sunk off Celebes possibly off Kaoe Bay |
| Maddux | John H | TM1 | 8-Nov-44 | GROWLER (SS-215) | Sunk in South China Sea |
| Madeo | Gerald F | F2 | 13-Aug-44 | FLIER (SS-250) | Sunk Balabac Strait near Mantangule Island |
| Madey | Alfred | EM1 | 1-Dec-43 | CAPELIN (SS-289) | Sunk off Celebes possibly off Kaoe Bay |
| Madison | Gordon O | MoMM2 | 16-Nov-43 | CORVINA (SS-226) | Sunk just south of Truk |
| Madsen | Robert | ENS | 4-Jul-44 | S-28 (SS-133) | Foundered off Hawaii |
| Maghan | Allan G | F1 | 18-Jun-45 | BONEFISH (SS-223) | Sunk in Toyama Wan |
| Magner | Joseph F | MoMM1 | 29-Feb-44 | TROUT (SS-202) | Sunk near 22° 40'N x131°45' E in Phillipines Basin |
| Maguire | Stanley W | EM2 | 19-Nov-43 | SCULPIN (SS-191) | Sunk north of Groluk Island near Truk |
| Magyar | Albert J. | MM3 | 11-Oct-43 | WAHOO (SS-238) | Sunk in or near La Perouse Strait (Northern Japan) or along northwest coast of Honshu. |
| Mahan | Ivan L. | MM1 | 25-Mar-15 | F-4 (SS-23) | Foundered off Honolulu |
| Maier | Marvin L | F2 | 16-Nov-43 | CORVINA (SS-226) | Sunk just south of Truk |
| Mairs | Clarence H. | S2 | 28-Sep-43 | CISCO (SS-290) | Sunk in Sulu Sea west of Mindinao |
| Majuri | Frank P | EM1 | 24-Aug-44 | HARDER (SS-257) | Sunk off Caiman Point near Bataan, RPI |
| Malinski | Frank J | LT(jg) | 10-Apr-63 | THRESHER (SSN-593) | Lost when submarine sank while on sea trials |
| Malko | Glenn R | S1 | 20-Mar-45 | KETE (SS-369) | Sunk somewhere between 29-38N 130-02E and Midway |
| Mallan | James F. | S1 | 4-Feb-45 | BARBEL (SS-316) | Sunk in southern entrance to Palawan Passage 7° 49.5' N x 116° 47.5' W . |
| Malone | Dallas L. | TM2 | 3-Oct-44 | SEAWOLF (SS-197) | Sunk just north of Morotai, between PI and Indonesia by USS Rowell |
| Maloney | Thomas J | TM3 | 16-Nov-43 | CORVINA (SS-226) | Sunk just south of Truk |
| MaloneyJr. | Richard M. | TM1 | 10-Jan-43 | ARGONAUT (SS-166) | Sunk near Rabaul (05° 155'N x 153° 50'E) |
| Maloy | F.B. | LT(jg) | 9-Sep-43 | GRAYLING (SS-209) | Sunk in or near Tablas Strait, RPI |
| Manalisay | Jesus C. | SM3 | 11-Oct-43 | WAHOO (SS-238) | Sunk in or near La Perouse Strait (Northern Japan) or along northwest coast of Honshu. |
| Mandjiak | Paul A. | MM3 | 11-Oct-43 | WAHOO (SS-238) | Sunk in or near La Perouse Strait (Northern Japan) or along northwest coast of Honshu. |
| Maness | Lloyd B | EMC | 8-Nov-44 | GROWLER (SS-215) | Sunk in South China Sea |
| Maney | Francis R | F2 | 8-Apr-45 | SNOOK (SS-279) | Sunk in area within 100 miles east of 18° 40' N x 111° 39'E |
| Manful | Kenneth W. | S1 | 7-Nov-44 | ALBACORE (SS-218) | Sunk near 41° 49'N x 141° 11'E in channel between Hokkaido and Honshu |
| Manganello | Lawrence A | CCS | 1-Feb-44 | SCORPION (SS-278) | Sunk in East China Sea/ Yellow Sea |
| Manley | John G | EM3 | 8-Apr-45 | SNOOK (SS-279) | Sunk in area within 100 miles east of 18° 40' N x 111° 39'E |
| Mann | Donald R | MoMM2 | 26-Mar-44 | TULLIBEE (SS-284) | Sunk in area north of Pelews. |
| Mann Jr. | Richard H | IC2 | 10-Apr-63 | THRESHER (SSN-593) | Lost when submarine sank while on sea trials |
| Manning | James R | S1 | 16-Nov-43 | CORVINA (SS-226) | Sunk just south of Truk |
| Manning | Ralph E | EM2 | 24-Aug-44 | HARDER (SS-257) | Sunk off Caiman Point near Bataan, RPI |
| Manning | Wallance S | MoMM2 | 8-Nov-44 | GROWLER (SS-215) | Sunk in South China Sea |
| Mansfield | Raymond L | F1 | 1-Sep-43 | POMPANO (SS-181) | Sunk off the northeast coast of Honshu |
| Marcus | Arnold | LT(jg) | 24-Jul-18 | A-7 (SS-8) | Gasoline Explosion |
| Marcus | Grover W | RM3 | 19-Nov-43 | SCULPIN (SS-191) | Sunk north of Groluk Island near Truk |
| Marin | Roy K | MoMM2 | 6-Aug-45 | BULLHEAD (SS-332) | Sunk in west end of Lombok Strait. |
| Marino | John Joseph | SA | 23-May-39 | SQUALUS (SS-192) | Sunk |
| Mark | David A | RM3 | 16-Nov-44 | SCAMP (SS-277) | Sunk off Inubo Saki near Tokyo Bay. |
| Markham | Jack P | TM3 | 6-Aug-45 | BULLHEAD (SS-332) | Sunk in west end of Lombok Strait. |
| Markham | Jack T | F1 | 16-Nov-44 | SCAMP (SS-277) | Sunk off Inubo Saki near Tokyo Bay. |
| Markin | Loran R. | F2 | 11-Feb-42 | SHARK (SS-174) | Sunk East of Menado, Celebes |
| Markle | John E | EM2 | 18-Jun-45 | BONEFISH (SS-223) | Sunk in Toyama Wan |
| Markle Jr. | Charles O | MoMM2 | 3-Apr-43 | PICKEREL (SS-177) | Sunk within lume of Shiramuka Light off Honshu |
| Marks | John H. | MoMM1 | 9-Sep-43 | GRAYLING (SS-209) | Sunk in or near Tablas Strait, RPI |
| Marlowe Jr. | Ollie H | TM2 | 11-Jul-43 | RUNNER (SS-275) | Sunk north of Hokkaido |
| Marriott Jr. | Joy M | S1 | 4-May-45 | LAGARTO (SS-371) | Sunk off Malay Coast in or near the Gulf of Siam. |
| Marsh | Joseph B. | MoMM1 | 12-Oct-43 | DORADO (SS-248) | Sunk in Western Atlantic, possibly near Cuba |
| Marshall | Elliot E | LCDR(CO) | 1-Dec-43 | CAPELIN (SS-289) | Sunk off Celebes possibly off Kaoe Bay |
| Marsico | Anthony T | F1 | 20-Mar-45 | KETE (SS-369) | Sunk somewhere between 29-38N 130-02E and Midway |
| Marston | George F. | TM3 | 3-Oct-44 | SEAWOLF (SS-197) | Sunk just north of Morotai, between PI and Indonesia by USS Rowell |
| Martin | Carson R. | MoMMC | 1-Aug-42 | GRUNION (SS-216) | Sunk near Entrance to Kiska Harbor |
| Martin | Charles M | EMC | 11-Jul-43 | RUNNER (SS-275) | Sunk north of Hokkaido |
| Martin | Clifford L | EM2 | 14-Jun-44 | GOLET (SS-361) | Sunk near 41° 04'N x 14° 13'E |
| Martin | G.H. | Cook | 25-Sep-25 | S-51 (SS-162) | Sank after collision with SS City of Rome off Block Island. |
| Martin | Gilbert S | RM1 | 11-Jul-43 | RUNNER (SS-275) | Sunk north of Hokkaido |
| Martin | Kenneth | ET2 | 2-Jun-68 | SCORPION (SSN-589) | Lost when submarine sank while in transit from Med. |
| Martin | Merlin G | FC3 | 19-Nov-43 | SCULPIN (SS-191) | Sunk north of Groluk Island near Truk |
| Martin | Paulino P. | MA2 | 10-Jan-43 | ARGONAUT (SS-166) | Sunk near Rabaul (05° 155'N x 153° 50'E) |
| Martin | Ray E | EM2 | 26-Jul-44 | ROBALO (SS-273) | Sunk by mine 2 miles from west Coast of Palawan Island, RPI. |
| Martin | Thomas E. | EM1 | 1-Aug-42 | GRUNION (SS-216) | Sunk near Entrance to Kiska Harbor |
| Martin | Wallace K | SM2 | 26-Jul-44 | ROBALO (SS-273) | Sunk by mine 2 miles from west Coast of Palawan Island, RPI. |
| Martin | William B. | S1 | 15-Mar-43 | TRITON (SS-201) | Sunk somewhere between Rabaul and Shortlands Basin. |
| Martini | Frank | SMC | 20-Mar-45 | KETE (SS-369) | Sunk somewhere between 29-38N 130-02E and Midway |
| Marullo Jr. | Julius F | QM1 | 10-Apr-63 | THRESHER (SSN-593) | Lost when submarine sank while on sea trials |
| Marvin | Paul | ENS | 12-Jan-45 | SWORDFISH (SS-193) | Sunk near Yaku Island off Kyushu |
| Marx | Marvin J | EM2 | 26-Jul-44 | ROBALO (SS-273) | Sunk by mine 2 miles from west Coast of Palawan Island, RPI. |
| Masincupp | Byron T. | RM3 | 24-Oct-44 | SHARK (SS-314) | Sunk in channel midway between Hainan and Bashi Channel |
| Masloski | Joseph | F1 | 1-Oct-44 | ESCOLAR (SS-294) | Sunk somewhere east of 33° 44'N x 127° 33'E |
| Mason | Wilbur J | LT(XO) | 1-Jun-44 | HERRING (SS-233) | Sunk within shore battery range of Point Tagan, Matsuwa Island, in Kuriles. |
| Mason Jr. | Richard K | LT(XO) | 8-Nov-44 | GROWLER (SS-215) | Sunk in South China Sea |
| Mason Jr. | William B | LCDR | 1-Dec-43 | CAPELIN (SS-289) | Sunk off Celebes possibly off Kaoe Bay Nov 43 |
| Massa | Edward E. | S1 | 11-Oct-43 | WAHOO (SS-238) | Sunk in or near La Perouse Strait (Northern Japan) or along northwest coast of Honshu. |
| Massett | Peter J | MoMM2 | 29-Feb-44 | TROUT (SS-202) | Sunk near 22° 40'N x131°45' E in Phillipines Basin |
| Massey | Arthur R. | MA2 | 16-Feb-43 | AMBERJACK (SS-219) | Sunk off Rabaul |
| Masucci | Donald P | F1 | 1-Sep-43 | POMPANO (SS-181) | Sunk off the northeast coast of Honshu |
| Mathis | Curtis V | TM3 | 12-Jun-43 | R-12 (SS-89) | Foundered off Key West while operating on the surface. |
| Mathis | Merlin O. | F3 | 9-Sep-43 | GRAYLING (SS-209) | Sunk in or near Tablas Strait, RPI |
| Mathison | Ryder | EM1 | 1-Aug-42 | GRUNION (SS-216) | Sunk near Entrance to Kiska Harbor |
| Mattes | Raymond C. | TM3 | 24-Jan-42 | S-26 (SS-131) | Sank after ramming by PC460 Gulf of Panama |
| Matthews | Cleo L | MoMM1 | 1-Sep-43 | POMPANO (SS-181) | Sunk off the northeast coast of Honshu |
| Matthews | Stanley E | RM1 | 1-Feb-44 | SCORPION (SS-278) | Sunk in East China Sea/ Yellow Sea |
| Matthews | William G | YN1 | 26-Jul-44 | ROBALO (SS-273) | Sunk by mine 2 miles from west Coast of Palawan Island, RPI. |
| Mattson | Charles C. | TM3 | 20-Feb-55 | POMODON (SS-486) | Battey explosion and fire |
| Mattson | Wayne T.E | F2 | 3-Apr-43 | PICKEREL (SS-177) | Sunk within lume of Shiramuka Light off Honshu |
| Mauer | Lawrence L | MoMM2 | 29-Feb-44 | TROUT (SS-202) | Sunk near 22° 40'N x131°45' E in Phillipines Basin |
| Maulding | Ernest C. | SM3 | 11-Oct-43 | WAHOO (SS-238) | Sunk in or near La Perouse Strait (Northern Japan) or along northwest coast of Honshu. |
| Maulding | George E. | TM3 | 11-Oct-43 | WAHOO (SS-238) | Sunk in or near La Perouse Strait (Northern Japan) or along northwest coast of Honshu. |
| Maus | Charles R. | SM2 | 3-Oct-44 | SEAWOLF (SS-197) | Sunk just north of Morotai, between PI and Indonesia by USS Rowell |
| Mautner | Matthew | PhM1 | 16-Nov-43 | CORVINA (SS-226) | Sunk just south of Truk |
| Mayer | P.S | ENS | 13-Aug-44 | FLIER (SS-250) | Sunk Balabac Strait near Mantangule Island |
| Mayes | John B | SM3 | 1-Jun-44 | HERRING (SS-233) | Sunk within shore battery range of Point Tagan, Matsuwa Island, in Kuriles. |
| Mayfield | James M | EM2 | 12-Jan-45 | SWORDFISH (SS-193) | Sunk near Yaku Island off Kyushu |
| Mazari | C.W. | MoMM2 | 12-Oct-43 | DORADO (SS-248) | Sunk in Western Atlantic, possibly near Cuba |
| Mazeika | Julian B. | S2 | 28-Sep-43 | CISCO (SS-290) | Sunk in Sulu Sea west of Mindinao |
| Mazzuchi | Frank P. | QM? | 2-Jun-68 | SCORPION (SSN-589) | Lost when submarine sank while in transit from Med. |
| McAfee | Huie King | EM2 | 23-May-39 | SQUALUS (SS-192) | Sunk |
| McBride | Roy J | MoMM2 | 18-Jun-45 | BONEFISH (SS-223) | Sunk in Toyama Wan |
| McBroome | Harold D. | MoMM1 | 12-Oct-43 | DORADO (SS-248) | Sunk in Western Atlantic, possibly near Cuba |
| McCaffrey | Morriss F | RT3 | 12-Jan-45 | SWORDFISH (SS-193) | Sunk near Yaku Island off Kyushu |
| McCall | Henry E. | MM3 | 12-Oct-43 | DORADO (SS-248) | Sunk in Western Atlantic, possibly near Cuba |
| McCalop | Herman T | MA1 | 15-Mar-43 | TRITON (SS-201) | Sunk somewhere between Rabaul and Shortlands Basin. |
| McCarson | Frank B. | EM1 | 28-Sep-43 | CISCO (SS-290) | Sunk in Sulu Sea west of Mindinao |
| McCarthy | J.J. | S1 | 25-Sep-25 | S-51 (SS-162) | Sank after collision with SS City of Rome off Block Island. |
| McClelland | Douglas R | EM3 | 10-Apr-63 | THRESHER (SSN-593) | Lost when submarine sank while on sea trials |
| McClelland | Elmo | F2 | 10-Jan-43 | ARGONAUT (SS-166) | Sunk near Rabaul (05° 155'N x 153° 50'E) |
| McCloskey | Thomas D. | RM2 | 1-Oct-44 | ESCOLAR (SS-294) | Sunk somewhere east of 33° 44'N x 127° 33'E |
| McClunny | Robert L | S1 | 16-Nov-44 | SCAMP (SS-277) | Sunk off Inubo Saki near Tokyo Bay. |
| McClure | Ike L. | SK3 | 20-Aug-76 | DACE (SSN-607) | Lost overboard while standing Topside watch. |
| McClure | Kenneth G | S1 | 15-Mar-43 | TRITON (SS-201) | Sunk somewhere between Rabaul and Shortlands Basin. |
| McClure | Ralph E. | EM2 | 17-Dec-17 | F-1 (SS-20) | Sank after collision with F-3 off La Jolla, CA. |
| McClure | William J. | S1 | 5-Mar-43 | GRAMPUS (SS-207) | Sunk in the Blackett Strait |
| McConnell | Ramsey F | EM3 | 26-Mar-44 | TULLIBEE (SS-284) | Sunk in area north of Pelews. |
| McCord | Donald J | MM1 | 10-Apr-63 | THRESHER (SSN-593) | Lost when submarine sank while on sea trials |
| McCormack | Patrick H | EM3 | 3-Apr-43 | PICKEREL (SS177) | Sunk within lume of Shiramuka Light off Honshu |
| McCorquadale | D.B | LT(jg) | 12-May-44 | GUDGEON (SS-211) | Sunk off Saipan |
| McCoy | Edward H | S1 | 13-Aug-44 | FLIER (SS-250) | Sunk Balabac Strait near Mantangule Island |
| McCoy | Walter G. | MoMMC | 3-Oct-44 | SEAWOLF (SS-197) | Sunk just north of Morotai, between PI and Indonesia by USS Rowell |
| McCreary | Frank E. | MM1 | 3-Mar-42 | PERCH (SS-176) | Sunk along 100 fathom curve northeast of Kangean Island, Java |
| McCreary Jr. | John W | QMC | 1-Jun-44 | HERRING (SS-233) | Sunk within shore battery range of Point Tagan, Matsuwa Island, in Kuriles. |
| McCulough Jr. | William E | SM1 | 14-Jun-44 | GOLET (SS-361) | Sunk near 41° 04'N x 14° 13'E |
| McCutcheon | Richard G. | TM3 | 1-Aug-42 | GRUNION (SS-216) | Sunk near Entrance to Kiska Harbor |
| McDaniel | Ray | S1 | 16-Feb-43 | AMBERJACK (SS-219) | Sunk off Rabaul |
| McDermott | Harry A | MoMM3 | 6-Aug-45 | BULLHEAD (SS-332) | Sunk in west end of Lombok Strait. |
| McDonald | James H | SC2 | 4-May-45 | LAGARTO (SS-371) | Sunk off Malay Coast in or near the Gulf of Siam. |
| McDonald | Robert S. | LT | 24-Oct-44 | SHARK (SS-314) | Sunk in channel midway between Hainan and Bashi Channel |
| McDonald | Warren G | EM3 | 26-Mar-44 | TULLIBEE (SS-284) | Sunk in area north of Pelews. |
| McDonald Jr. | Donald | MoMM1 | 11-Jul-43 | RUNNER (SS-275) | Sunk north of Hokkaido |
| McDonough | G.W | RM1 | 28-Mar-45 | TRIGGER (SS-237) | Sunk in area 32° 16'N to 30° 40'N by 132° 05'E to 127° 50'E. |
| McDonough | Karl P | TM3 | 10-Apr-63 | THRESHER (SSN-593) | Lost when submarine sank while on sea trials |
| McDuffie | William B | SC3 | 29-Feb-44 | TROUT (SS-202) | Sunk near 22° 40'N x131°45' E in Phillipines Basin |
| McElrath | James | QM2 | T. ROOSEVELT (SSBN-600) | Died of probable cerebral hemorrage while on patrol | |
| McElroy | Rex E. | EM2 | 11-Feb-42 | SHARK (SS-174) | Sunk East of Menado, Celebes |
| McEntyer | Ones W | S1 | 8-Apr-45 | SNOOK (SS-279) | Sunk in area within 100 miles east of 18° 40' N x 111° 39'E |
| McFadden | Melvin L | MoMM1 | 26-Mar-44 | TULLIBEE (SS-284) | Sunk in area north of Pelews. |
| McGahan | James E | QM3 | 8-Apr-45 | SNOOK (SS-279) | Sunk in area within 100 miles east of 18° 40' N x 111° 39'E |
| McGee | Justin M | TM2 | 4-May-45 | LAGARTO (SS-371) | Sunk off Malay Coast in or near the Gulf of Siam. |
| McGill | Thomas J. | MoMMC | 11-Oct-43 | WAHOO (SS-238) | Sunk in or near La Perouse Strait (Northern Japan) or along northwest coast of Honshu. |
| McGilton | Howard E. | TM3 | 11-Oct-43 | WAHOO (SS-238) | Sunk in or near La Perouse Strait (Northern Japan) or along northwest coast of Honshu. |
| McGinley | J.A. | LT | 17-Dec-27 | S-4 (SS-109) | Sunk after collision with USCG Paulding off Provencetown, MA |
| McGrath | Francis M. | QM3 | 12-Oct-43 | DORADO (SS-248) | Sunk in Western Atlantic, possibly near Cuba |
| McGrath | Thomas P | LT(XO) | 1-Sep-43 | POMPANO (SS-181) | Sunk off the northeast coast of Honshu |
| McGrevy | Frank B | EM2 | 24-Aug-44 | HARDER (SS-257) | Sunk off Caiman Point near Bataan, RPI |
| McGuinness | J.F | PhM2 | 4-Jul-44 | S-28 (SS-133) | Foundered off Hawaii |
| McGuire | Michael L. | ET1 | 2-Jun-68 | SCORPION (SSN-589) | Lost when submarine sank while in transit from Med. |
| McGuire Jr. | Ralph M | F1 | 8-Apr-45 | SNOOK (SS-279) | Sunk in area within 100 miles east of 18° 40' N x 111° 39'E |
| McHolland | Forrest O | MoMM2 | 16-Nov-43 | CORVINA (SS-226) | Sunk just south of Truk |
| McHugh Jr. | Lawrence J | TM3 | 28-Mar-45 | TRIGGER (SS-237) | Sunk in area 32° 16'N to 30° 40'N by 132° 05'E to 127° 50'E. |
| McKean | Richard O. | EM2 | 4-Feb-45 | BARBEL (SS-316) | Sunk in southern entrance to Palawan Passage 7° 49.5' N x 116° 47.5' W . |
| McKee | Eugene O | MoMM3 | 16-Nov-44 | SCAMP (SS-277) | Sunk off Inubo Saki near Tokyo Bay. |
| McKenna | John R | TM3 | 12-May-44 | GUDGEON (SS-211) | Sunk off Saipan |
| McKenna | Patrick K. | S1 | 7-Nov-44 | ALBACORE (SS-218) | Sunk near 41° 49'N x 141° 11'E in channel between Hokkaido and Honshu |
| McKennon | Mack | RM2 | 4-Feb-45 | BARBEL (SS-316) | Sunk in southern entrance to Palawan Passage 7° 49.5' N x 116° 47.5' W . |
| McKenzie | Jack M. | MoMMC | 4-Feb-45 | BARBEL (SS-316) | Sunk in southern entrance to Palawan Passage 7° 49.5' N x 116° 47.5' W . |
| McKenzie | Lloyd C | TM1 | 15-Mar-43 | TRITON (SS-201) | Sunk somewhere between Rabaul and Shortlands Basin. |
| McKibben | P.T | EM1 | 12-Jun-43 | R-12 (SS-89) | Foundered off Key West while operating on the surface. |
| McKinney | Eldridge W | RT3 | 16-Nov-44 | SCAMP (SS-277) | Sunk off Inubo Saki near Tokyo Bay. |
| McKinney | Kenneth E. | EM2 | 11-Feb-42 | SHARK (SS-174) | Sunk East of Menado, Celebes |
| McKnight Jr. | H.F | LT(jg) | 26-Jul-44 | ROBALO (SS-273) | Sunk by mine 2 miles from west Coast of Palawan Island, RPI. |
| McLallen | James W | TM3 | 12-May-44 | GUDGEON (SS-211) | Sunk off Saipan |
| McLane | Vernon C | MoMM3 | 13-Aug-44 | FLIER (SS-250) | Sunk Balabac Strait near Mantangule Island |
| McLaughlin | John J | QM3 | 8-Nov-44 | GROWLER (SS-215) | Sunk in South China Sea |
| McLaughlin | William A | SM1 | 16-Nov-44 | SCAMP (SS-277) | Sunk off Inubo Saki near Tokyo Bay. |
| McLean | Robert A. | TM1 | 16-Feb-43 | AMBERJACK (SS-219) | Sunk off Rabaul |
| McLendon | Bernard E | MoMM2 | 20-Mar-45 | KETE (SS-369) | Sunk somewhere between 29-38N 130-02E and Midway |
| McLendon | Willie R | TM3 | 1-Jun-44 | HERRING (SS-233) | Sunk within shore battery range of Point Tagan, Matsuwa Island, in Kuriles. |
| McMahon | John | TMC | 3-Apr-43 | PICKEREL (SS177) | Sunk within lume of Shiramuka Light off Honshu |
| McMahon | John M. | LT | 1-Aug-42 | GRUNION (SS-216) | Sunk near Entrance to Kiska Harbor |
| McMillan | Marvin R | RM3 | 4-Jul-44 | S-28 (SS-133) | Foundered off Hawaii |
| McMillan | Russell K | MoMM1 | 1-Feb-44 | SCORPION (SS-278) | Sunk in East China Sea/ Yellow Sea |
| McMorrow | Robert V | MoMM2 | 25-Oct-44 | TANG (SS-306) | Sunk in north end of Formosa Strait in the vicinity of Turnabout Island. |
| McMullen | Louis R | TM2 | 8-Nov-44 | GROWLER (SS-215) | Sunk in South China Sea |
| McNabb | John J | F1 | 25-Oct-44 | TANG (SS-306) | Sunk in north end of Formosa Strait in the vicinity of Turnabout Island. |
| McNally Jr. | Frank A | RT2 | 1-Feb-44 | SCORPION (SS-278) | Sunk in East China Sea/ Yellow Sea |
| McNeela | Robert T | RT3 | 4-Jul-44 | S-28 (SS-133) | Foundered off Hawaii |
| McNeil | John R | EMC | 16-Nov-44 | SCAMP (SS-277) | Sunk off Inubo Saki near Tokyo Bay. |
| McNeill | Donald J | LT(jg) | 8-Apr-45 | SNOOK (SS-279) | Sunk in area within 100 miles east of 18° 40' N x 111° 39'E |
| McNeill | Willie A. | SM2 | 7-Nov-44 | ALBACORE (SS-218) | Sunk near 41° 49'N x 141° 11'E in channel between Hokkaido and Honshu |
| McNicol | Wallace F | RM3 | 12-May-44 | GUDGEON (SS-211) | Sunk off Saipan |
| McRae | Duncan A. | EM1 | 17-Dec-17 | F-1 (SS-20) | Sank after collision with F-3 off La Jolla, CA. |
| McSpadden | Donald J. | TM1 | 11-Oct-43 | WAHOO (SS-238) | Sunk in or near La Perouse Strait (Northern Japan) or along northwest coast of Honshu. |
| McTavish | John F | S1 | 19-Nov-43 | SCULPIN (SS-191) | Sunk north of Groluk Island near Truk |
| McWilliams | Gordon K | BK3 | 24-Aug-44 | HARDER (SS-257) | Sunk off Caiman Point near Bataan, RPI |
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