| Name | Sailor ID | Most Recent Declaration |
|---|---|---|
| Sten Mohr | DENSM | 75.0kg - Professional |
| Tom Montgomery | GBRTM78 | 73.0kg - Amateur |
| Dylan Moore | GBRDM68 | 88.0kg - Amateur |
| Ed Moore | GBREM72 | |
| lan Moore | GBRIM21 | 80.0kg - Professional |
| Susie Moore | GBRSM116 | |
| Tiago Morais | PORTM3 | 82.0kg - Professional |
| Stevie Morisson | GBRSM24 | 80.0kg - Professional |
| Finn Morris | GBRFM34 | 72.0kg - Amateur |
| Roger Morris | GBRRM22 | 84.0kg - Amateur |
| Dom Mortimer | GBRDM96 | 82.0kg - Amateur |
| Udo Moser | AUTUM1 | 84.0kg - Amateur |
| Richard Moxey | GBRRM128 | 67.0kg - Amateur |
| Derek Moynan | IRLDM48 | 82.0kg - Amateur |
| Fiona Mulcahy | GBRFM33 | 64.0kg - Amateur |
| Jan willem Mulier | NEDJH61 | 85.0kg - Amateur |
| James Murphy | IRLJM120 | |
| Tommy Murphy | IRLTM36 | 97.0kg - Amateur |
| Jack Murray | GBRJM215 | 85.0kg - Amateur |
| Arthur Musset | FRAAM118 | 66.0kg - Amateur |
| Ed Myers | GBREM60 | 85.0kg - Amateur |
| Alan Nakanishi | USAAN2 | 58.0kg - Amateur |
| Charles Nankin | RSACN1 | 97.0kg - Professional |
| Konrad Nehrenberg | GERKN7 | |
| Martin Neidhardt | AUTMN1 | 97.0kg - Amateur |