| Pos | Name | Country | stamps | Since |
|---|---|---|---|---|
| 987 | Silva Sofia | México | 1 | 21/09/2011 |
| 353 | Silva Javier | Venezuela | 9 | 15/11/2011 |
| 650 | Siru Elisa | España | 5 | 07/02/2020 |
| 937 | Sirvent Ruben | España | 1 | 21/10/2012 |
| 822 | Skiarow Maria Eugenia | Argentina | 1 | 02/07/2014 |
| 930 | Sobrado Hernán | Argentina | 1 | 18/02/2016 |
| 456 | Socorro Roberto | España | 16 | 12/10/2009 |
| 183 | Solaz Jorge | España | 93 | 18/05/2008 |
| 1009 | Solé I Carreté Marc | España | 1 | 02/08/2013 |
| 58 | Soler Montserrat | España | 2022 | 15/03/2011 |
| 342 | Soria Belisario | España | 19 | 31/08/2009 |
| 860 | Soria Dominguez Carmen | España | 1 | 14/01/2018 |
| 887 | Sosa Tania | Uruguay | 1 | 11/03/2011 |
| 958 | Soto Miguel | España | 1 | 01/11/2010 |
| 768 | Sotodosos Raúl | Francia | 2 | 11/08/2019 |
| 904 | Souza Rodolfo | Brasil | 1 | 28/09/2019 |
| 1001 | Spinos Carla | Venezuela | 2 | 24/01/2010 |
| 388 | Sss Richar | Uruguay | 29 | 07/03/2011 |
| 939 | Stamps And More Sellos Y MÁs Xxx | España | 1 | 21/12/2015 |
| 503 | Stefanica Delia | España | 11 | 16/08/2016 |