| Name and firstname(s) | Name Toernooibase | Club or Country |
 Swelsen, Tom | Tom Swelsen | DIOS-Eureka |
 Swerts, Jean | Jean Swerts | Belgium |
 Swiatek, Kacper | Kacper Swiatek | Poland |
 Swierczek, Caroline | Caroline Swierczek | France |
 Swieringa, Thimo | Thimo Swieringa | Heteren |
| Swierkowski, NN. | NN. Swierkowski | Belgium |
 Swieten, van, Pieter Adrianus | Piet van Swieten | Componisten |
 Swijgman, Bryan | Bryan Swijgman | |
 Swinkels, Cornelis Casper Hendrikus | Cornelis Casper Hendrikus Swinkels (13.12.1894 - 01.02.1972) Add info | |
| Swinkels, Jos | Jos Swinkels ( - 07.06.1984) Add info | |
| Swiszcz, Mateusz | Mateusz Swiszcz | Poland |
| Switten, Laurent | Laurent Switten | Belgium |
 Swizinski, Valerij | Valerij Swizinski | Belarus |
 Swjatoj, Piotr | Piotr Swjatoj | |
| Swoboda, Kamil | Kamil Swoboda | Poland |
| Sy, Baba | Baba Sy (10.07.1935 - 20.08.1978) | |
 Sy, Birahim | Birahim Sy | Senegal |
| Sy, Haueadou | Haueadou Sy | Senegal |
 Sy, Mohamed | Mohamed Sy | Guinee |
 Sy, Oumar | Oumar Sy | Niger |
| Sy, Seydina Mouhamed | Seydina Mouhamed Sy | Senegal |
 Sybesma, Anke | Anke Sybesma | DC Winschoten |
| Sybranda, Willem | Willem Sybranda | |
 Sychev, Sergei | Sergei Sychev | Russia |
 Sychev, V. | V. Sychev | USSR |
| Sycugov, Viktor Ivanovitsj | Viktor Ivanovitsj Sycugov | Russia |
| Sykens, NN. | NN. Sykens | Belgium |
| Sylla, Aboubacar | Aboubacar Sylla | Guinee |
 Sylla, Abdoulaye (Ivo.) | Abdoulaye Sylla | Ivory Coast |
 Sylla, Abdoulaye (Mali) | Abdoulaye Sylla | Mali |
| Sylla, Abdoulaye (Sen.) | Abdoulaye Sylla | Senegal |
| Sylla, Daouda | Daouda Sylla | Ivory Coast |
 Sylvester, Keith | Keith Sylvester | Trinidad and Tobago |
| Sylvestre, Jean Pierre | Jean Pierre Sylvestre | France |
| Syrendorgiev, Daba | Daba Syrendorgiev | Russia |
| Sysak, Mateusz | Mateusz Sysak | Poland |
 Sysel, Jiri | Jiri Sysel | Czech Republic |
| Sysel, Pavel | Pavel Sysel | Czech Republic |
| Syslova, Jolana | Jolana Syslova | Czech Republic |
| Sytsma, M. (dubbel) | dubbele invoer | |
| Sytsma, Wouter | Wouter Sytsma | |
 Sytsma, Wytze | Wytze Sytsma | DamCombinatie Fryslan |
 Szabo, Gabor | Gábor Szabó | Hungary |
| Szachniewicz, Ryszard | Ryszard Szachniewicz | Poland |
| Szakal, Dorina | Dorina Szakal | Hungary |
| Szalecka, Henryka | Henryka Szalecka | Poland |
| Szatkowski, Jerzy | Jerzy Szatkowski | Poland |
| Szatmary, Isabel | Isabel Szatmary | Czech Republic |
| Szczakowski, Andrzej | Andrzej Szczakowski | Poland |
| Szczepaniak, Marius | Mariusz Szczepaniak | Poland |
| Szczybylo, Magdalena | Magdalena Szczybylo | Poland |
| Szczybylo, Michal | Michal Szczybylo | Poland |
| Szczygiel, Radoslaw | Radoslaw Szczygiel | Poland |
| Szekeres, David | David Szekeres | Hungary |
| Szela, Dorota | Dorota Szela | Poland |
| Szelest, Boguslaw | Boguslaw Szelest | Poland |
| Szescilo, Moreira Ribeiro E | Moreira Ribeiro E Szecilo | Poland |
| Szkiladz, Milena | Milena Szkiladz | Poland |
| Sznajer, J. | J. Sznajer | Belgium |
| Szostak, Wiktoria | Wiktoria Szostak | Poland |
| Szotek, Luc | Luc Szotek | Belgium |
| Szotek, R. | R. Szotek | Belgium |
| Szpunar, Oliwia | Oliwia Szpunar | Poland |
| Sztybow, Marcin | Marcin Sztybow | Poland |
| Szubert, Piotr | Piotr Szubert | Poland |
| Szulc, Jan | Jan Szulc | Poland |
| Szumera, Franciszek | Franciszek Szumera | Poland |
| Szwiec, Oliwia | Oliwia Szwiec | Poland |
| Szychowska, Grazyna Krystyna | Grazyna Krystyna Szychowska | Poland |
| Szydlowska, Agnieszka | Agnieszka Szydlowska | Poland |
| Szymanska, Agnieszka | Agnieszka Szymanska | Poland |
| Szymanska, Joanna | Joanna Szymanska | Poland |
| Szymanski, Jakub | Jakub Szymanski | Poland |
| Szymaszkiewicz, Katarzyna | Katarzyna Szymaszkiewicz | Poland |
| Szymeczko, Bartlomiej | Bartlomiej Szymeczko | Poland |
| Szypa, Filip | Filip Szypa | Poland |
 T900Cameron (Quentin Cohen-Solal), | T900Cameron (Quentin Cohen-Solal) | Rapid CCD |
| Tabaka, Klaudia | Klaudia Tabaka | Poland |
 Tabatchnik, Simon | Simon Tabatchnik | Israel |
| Tabio, Kouadjo | Kouadjo Tabio | Ivory Coast |
| Tabio, Thierry | Thierry Tabio | Ivory Coast |
 Tabor, Claudio | Claudio Tabor | Italy |
| Tabor, Erik | Erik Tabor | |
 Tabunovs, Aleksandrs | Aleksandrs Tabunovs | Latvia |
| Tack, Antoine | Antoine Tack | Belgium |
| Tacussel, Marius | Marius Tacussel (01.11.1900 - 13.03.1979) Add info | |
 Tagandurdyyev, Nurbay | Nurbay Tagandurdyyev | Turkmenistan |
 Tagnan, Bagao Flugence | Bagao Flugence Tagnan | Burkina Faso |
| Tago, Guetawende | Guetawende Tago | Burkina Faso |
| Tagouyat, Constant | Constant Tagouyat | Ivory Coast |
| Tagro, Prince Bonaventur | Prince Bonaventur Tagro | Ivory Coast |
| Tahi, Elysee Bailly | Elysée Bailly Tahi | Ivory Coast |
| Tahou, Sehe | Sehe Tahou | Ivory Coast |
 Taidla, Dan | Dan Taidla | Estonia |
| Taieb, Albert | Albert Taieb | France |
| Taillandier, Brice | Brice Taillandier | France |
| Taillandier, Gilles | Gilles Taillandier | France |
| Taillandier, Leandre | Léandre Taillandier | France |
| Taillefer, Oscar | Oscar Taillefer | |
| Taillepierre, Romuald | Romuald Taillepierre | France |
