| NO | RATING | NAME | STATE | USCFID | EXPIRES | EVENTS |
| 1 | | Judino Tadeo Macayan | PHL | | | POLGAR-BU14 |
| 2 | 1951 | Alan R Macier | AZ | 12484799 | 02/11 | NATLOPEN-U2000 |
| 3 | | Andrew Mah | CA | 14442873 | 05/11 | POLGAR-BU11 |
| 4 | 2122 | Ernesto Malazarte | TX | 13517950 | 10/10 | NATLOPEN-U2200 |
| 5 | 1849 | Daniel J Mallaghan | IRL | 13728845 | 06/11 | NATLOPEN-U2000 |
| 6 | 728 | Henry William Maltby | CA | 12872624 | 02/11 | NATLOPEN-U1200[2day] |
| 7 | 2183 | Satyajit Malugu | WA | 13510282 | 08/10 | NATLOPEN-U2200 |
| 8 | 1862 | Jacob Maneth | AZ | 12828661 | 01/11 | NATLOPEN-U2000 |
| 9 | 1739 | Paul Manfredi | AZ | 12675256 | 06/11 | NATLOPEN-U1800[2day] |
| 10 | 1724 | Paul Adrian Manila | PHL | | | NATLOPEN-U1800 |
| 11 | 758 | Nicole Mann | AZ | 14153870 | 05/11 | POLGAR-GU14[PUZZLE] BREAKFAST BULLETINS |
| 12 | 1769 | Sean J Manross | CA | 13105845 | 06/10 | POLGAR-BU19[BLITZ] |
| 13 | 1769 | Sean J Manross | CA | 13105845 | 06/10 | POLGAR-NONE[PUZZLE] |
| 14 | 2075 WIM | Cristine Rose Isurin Mariano | PHL | 13468812 | 12/10 | NATLOPEN-U2200 BLITZ-OPEN BULLETINS |
| 15 | 2075 WIM | Cristine Rose Isurin Mariano | PHL | 13468812 | 12/10 | GAME10 |
| 16 | 1682 | Jason Mark | NV | 12814948 | 06/11 | NATLOPEN-U1800[2day] |
| 17 | 1648 | Dean S Markarian | NV | 12621725 | 12/10 | NATLOPEN-U1800[2day] |
| 18 | 1133 | Robert Bryan Martin | CA | 13750655 | 09/10 | NATLOPEN-U1400 |
| 19 | 1310 | Alexia C Martinez | NV | 13072280 | 01/11 | POLGAR-GU14 TROPHY-U1800 |
| 20 | 593/5 | Fernando S Martinez | TX | 14352563 | 01/11 | POLGAR-BU14 |
| 21 | 1812 | Isaac C Martinez | NV | 13072295 | 01/11 | SIMUL-ZATONSKIH |
| 22 | 1812 | Isaac C Martinez | NV | 13072295 | 01/11 | NATLOPEN-U2000 |
| 23 | 1812 | Isaac C Martinez | NV | 13072295 | 01/11 | BLITZ-OPEN |
| 24 | 1992 | Lawrence Martinez | CA | 12550947 | 06/11 | NATLOPEN-U2000[2day] |
| 25 | 1162 | Luke X Martinez | NV | 13072274 | 01/11 | POLGAR-BU11 TROPHY-U1200 |
| 26 | 1513 | Matthew Martinez | NV | 13072226 | 01/11 | POLGAR-BU19 TROPHY-U1800 |
| 27 | 579 | Steven M Martinez | TX | 13541154 | 11/10 | POLGAR-BU14 |
| 28 | 1741 | William Martino | CA | 10442559 | Life | NATLOPEN-U1800 |
| 29 | 1834 | Timothy Michael Martinson | NM | 12928698 | 06/11 | NATLOPEN-U2000 GAME10 |
| 30 | 1240 | Samuel Reed Mason | UT | 13478741 | 08/12 | GAME10 |
| 31 | 1240 | Samuel Reed Mason | UT | 13478741 | 08/12 | TROPHY-U1800 |
| 32 | 1240 | Samuel Reed Mason | UT | 13478741 | 08/12 | NATLOPEN-U1400[2day] |
| 33 | 2559 IM | Andranik Matikozyan | ARM | 12740524 | 06/09 | NATLOPEN-OPEN |
| 34 | 1822 | Stephen Li Jian Mau | HI | 13477863 | 07/10 | NATLOPEN-U2000[2day] BLITZ-OPEN |
| 35 | 1813 | Dan E Mayers | ID | 10524822 | Life | NATLOPEN-U2000 BULLETINS |
| 36 | 1933 | Tom R Mayka | AZ | 10338239 | 08/10 | NATLOPEN-U2000 |
| 37 | 1020/13 | Paul B McCallum | CA | 14351010 | 01/13 | NATLOPEN-U1200 |
| 38 | 105/8 | Kathleen McCarthy | TX | 14372530 | 02/11 | POLGAR-GU19 |
| 39 | 1846 | Joseph E Mc Cleve | WA | 12509718 | 04/12 | NATLOPEN-U2000 |
| 40 | 1846 | Joseph E Mc Cleve | WA | 12509718 | 04/12 | SIMUL-ZATONSKIH |
| 41 | 418/24 | Mason McCoy | AZ | 14153430 | 06/11 | POLGAR-BU11[BLITZ] TROPHY-U800 |
| 42 | 1699 | Taylor McCreary | CA | 13656773 | 02/13 | POLGAR-GU14[PUZZLE,BLITZ,SIMUL] |
| 43 | 1792 | Paul McGaugh | NV | 12448486 | 04/11 | NATLOPEN-U1800 |
| 44 | 1438 | James R McGee | NV | 12463721 | 01/11 | NATLOPEN-U1600 |
| 45 | 1992 | Chris McKay | CA | 11441904 | 01/12 | NATLOPEN-U2000 GAME10 SIMUL-AKOBIAN |
| 46 | 1340 | Timothy Todd McManus | NV | 12364700 | 12/11 | NATLOPEN-U1400 SIMUL-ZATONSKIH |
| 47 | 1440 | Jeffrey W McMillen | MO | 12713158 | 10/10 | NATLOPEN-U1600[2day] |
| 48 | 1866 | Brian Mason McNiece | NM | 13997116 | 07/12 | NATLOPEN-U2200 GAME10 BLITZ-OPEN |
| 49 | 1531 | Marshal A Meador | AZ | 12882539 | 04/11 | NATLOPEN-U1600 |
| 50 | 1859 | Scott Henry Menke | NV | 12856957 | 02/12 | NATLOPEN-U2000[2day] |
| 51 | 1615 | Peter Mertvago | HI | 12717869 | 08/10 | NATLOPEN-U1800 |
| 52 | 1234/5 | Hannah Merwin | WA | 14089296 | 02/12 | NATLOPEN-U1400 |
| 53 | 2130 | Steve Merwin | WA | 12087700 | 06/12 | NATLOPEN-OPEN |
| 54 | 2162 | Matthew E Michaelides | TX | 12844429 | 10/12 | NATLOPEN-OPEN GAME10 |
| 55 | | Caleb Midcap | ID | 14443347 | 05/11 | POLGAR-BU11 TROPHY-U800 |
| 56 | 968/7 | Cameron L Miller | AZ | 14402897 | 04/11 | POLGAR-BU11 CAMP-BOTH |
| 57 | 568/7 | Mason Dave Miller | AZ | 14421196 | 04/11 | POLGAR-BU8 |
| 58 | 2061 | Tony A Miller | CA | 10036607 | Life | NATLOPEN-U2200[2day] |
| 59 | 884 | Kathy Min | ID | 13976963 | 06/11 | TROPHY-U1200 |
| 60 | 884 | Kathy Min | ID | 13976963 | 06/11 | POLGAR-GU14 |
| 61 | 396 | Michael Min | ID | 13976978 | 06/11 | POLGAR-BU11 |
| 62 | 396 | Michael Min | ID | 13976978 | 06/11 | TROPHY-U800 |
| 63 | 1151 | William Min | ID | 13976957 | 06/11 | POLGAR-BU14 |
| 64 | 1151 | William Min | ID | 13976957 | 06/11 | TROPHY-U1800 |
| 65 | 1896 | Mika L Mitchell | WA | 12438674 | 10/10 | NATLOPEN-U2000 |
| 66 | 1909 | Trey Modlin | OH | 12803731 | 04/11 | POLGAR-BU19 |
| 67 | 750 | Steven Molotnikov | CA | 14217283 | 05/12 | POLGAR-BU8 TROPHY-U800 CAMP-PM |
| 68 | 1405 | Marcos Montes | CA | 12938335 | 05/12 | NATLOPEN-U1600 GAME10 SIMUL-AKOBIAN |
| 69 | 1700 | Robert C Moore | NC | 10209331 | Life | NATLOPEN-U2000 |
| 70 | 692 | Ramon Antonio Morales | TX | 13642657 | 02/11 | POLGAR-BU19 |
| 71 | 1147/23 | Francisco Javier Moreno | AZ | 13752275 | 06/11 | NATLOPEN-U1200 |
| 72 | 1131 | Conrad Morris | UT | 13729263 | 06/11 | NATLOPEN-U1200[2day] TROPHY-U1200 |
| 73 | 1131 | Conrad Morris | UT | 13729263 | 06/11 | POLGAR-NONE[BLITZ,SIMUL] |
| 74 | 2216 | Alaa-Addin Moussa | CA | 12641188 | 11/10 | NATLOPEN-OPEN |
| 75 | 1905 | Daniel Mousseri | CA | 13425010 | 03/11 | NATLOPEN-U2200 |
| 76 | 1569 | Kambiz Movaghar | CA | 12555933 | 06/11 | NATLOPEN-U1600 |
| 77 | 1489 | Kevin Moy | CA | 13737545 | 07/10 | NATLOPEN-U1600[2day,bye1] |
| 78 | 2142 | Jason L Mueller | AZ | 20094422 | Life | NATLOPEN-OPEN |
| 79 | 1407 | Casper Ziggy Mulholland-London | AZ | 13169284 | 12/10 | NATLOPEN-U1600 |
| 80 | 1143 | Thomas Lee Mullikin | CO | 12905792 | 05/11 | NATLOPEN-U1400 |
| 81 | 295 | Alexandra K Muriel | TX | 14267396 | 10/10 | POLGAR-GU19 |
| 82 | | Brian Murphy | | 14441748 | 05/11 | SIMUL-ZATONSKIH |
| 83 | 2116 | Brian F Murphy | MA | 14441748 | 05/11 | NATLOPEN-U2200 |
| 84 | | Cathal James Murphy | IRL | 14452184 | 06/12 | NATLOPEN-UNRATED |
| 85 | | Cathal James Murphy | IRL | 14452184 | 06/12 | SIMUL-ZATONSKIH |
| 86 | 835 | Charles Chase Murry | NV | 12967781 | 10/09 | POLGAR-BU19[PUZZLE,BLITZ,SIMUL] TROPHY-U1200 |
