| Pos | Name | Country | stamps | Since |
|---|---|---|---|---|
| 176 | Moreiras Luis | España | 324 | 03/05/2012 |
| 635 | Morena Joana | España | 2 | 03/03/2013 |
| 105 | Moreno Wáshington | Uruguay | 523 | 15/07/2009 |
| 428 | Moreno Jose | España | 13 | 14/06/2013 |
| 604 | Moreno Amoros Teresa | España | 4 | 06/06/2014 |
| 842 | Moreno Mota María Lucía | España | 1 | 15/03/2014 |
| 444 | Moreu Carlos | España | 4 | 28/07/2010 |
| 362 | Morher Heike | España | 95 | 11/01/2014 |
| 205 | Mosqueda Minerva | México | 207 | 13/11/2009 |
| 243 | Mosquera Albert | España | 55 | 06/11/2008 |
| 517 | Mosquera Antonio | España | 6 | 19/02/2011 |
| 178 | Múgica Virginia | Uruguay | 333 | 18/08/2011 |
| 358 | Muñoz Lorena | Chile | 20 | 01/12/2011 |
| 345 | Muñoz David | Chile | 34 | 20/08/2012 |
| 528 | MuÑoz GalÁn Daniel | España | 4 | 26/08/2011 |
| 281 | Muñoz Rebolledo Patricio | Chile | 22 | 09/01/2011 |
| 763 | Muñoz Romero M. Alberto | España | 1 | 14/06/2009 |
| 792 | Murcia Eduardo | España | 1 | 11/11/2012 |
| 47 | Nadal Jorge | España | 3792 | 17/11/2010 |
| 820 | Nasser Yon | Colombia | 1 | 08/03/2014 |