| Pos | Name | Country | stamps | Since |
|---|---|---|---|---|
| 748 | Cepeda Eva | España | 2 | 12/11/2009 |
| 902 | Cerda Luis | República Dominicana | 1 | 30/01/2014 |
| 782 | Cermeño Jose Antonio | España | 1 | 20/06/2011 |
| 51 | Cerquera Antonio | España | 2383 | 09/02/2010 |
| 397 | Cesar Julio | Argentina | 30 | 26/06/2011 |
| 301 | Chacón Marco | Uruguay | 8 | 04/01/2008 |
| 761 | Chacon Williams | Venezuela | 2 | 03/01/2017 |
| 894 | Chao Jose | España | 1 | 21/08/2010 |
| 897 | Chavez Yañez Maria De Jesus | México | 1 | 27/10/2016 |
| 161 | Chehab Jamil | Ecuador | 171 | 14/09/2011 |
| 208 | Chenel Carlos | España | 73 | 20/01/2009 |
| 396 | Choque Valeria | Argentina | 21 | 13/10/2009 |
| 667 | Chueca Francisco | España | 4 | 18/02/2012 |
| 169 | Cincimino Daniel Adrián | Argentina | 443 | 05/05/2017 |
| 192 | Ciprian Manzat | España | 143 | 19/11/2008 |
| 233 | Ciurana Oscar | España | 120 | 12/03/2009 |
| 300 | Cócaro Rodrigo | Uruguay | 10 | 12/08/2008 |
| 964 | Colell Jose | España | 1 | 23/05/2012 |
| 492 | Colman Anibal | Uruguay | 7 | 18/10/2017 |
| 177 | Colombo Emiliano | Argentina | 68 | 07/03/2009 |