Munzinger Sport Si-Sn
- Sidka, Wolfgang
- Sidlo, Janusz
- Sidlo, William
- Sidorenko, Wassili
- Sidorowa, Anschelika
- Sidorowa, Walentina
- Siebeck, Frank
- Siebeck, Mark
- Sieber, Ludwig
- Siebert, Gloria
- Siebert, Klaus
- Siegemund, Laura
- Siegenthaler, Urs
- Siegers, Britta
- Siegl, Sigrun
- Siegrist, Stephan
- Siemens, Henning
- Siemensmeyer, Hans
- Siem, Marcel
- Sietas, Erwin
- Sievert, Hans Heinrich
- Siewert, Jaron
- Siewert, Thomas
- Siffert, Josef
- Sigl, Albert
- Sigl, Gerhard
- Sigmund, Regina
- Signori, Giuseppe
- Sigurðsson, Dagur
- Sigurðsson, Guðjón Valur
- Sigurðsson, Gylfi
- Sigurvinsson, Asgeir
- Sikma, Luke
- Sikora, Miro
- Sikora, Tomasz
- Silas
- Silivas, Daniela
- Silk, David
- Silnow, Andrej
- Silva, Acacio Da
- Silva, Adhemar Ferreira da
- Silva Couto, Fernando Manuel
- Silva, Robson Caetano Da
- Silva, Thiago Braz da
- Silva, Yarisley
- Silvester, Jay
- Silvestre, Mikaël
- Sime, Dave
- Simeone, Diego
- Simeoni, Sara
- Simetsreiter, Wilhelm
- Simjatow, Nikolai
- Simmelbauer, Bernhard
- Simmen, Gian
- Simmer, Charles Robert
- Simon, Agnes
- Simon, Carolin
- Simoncelli, Marco
- Simond, Jean Christophe
- Simon, Gilles
- Simon, Hugo
- Simoni, Gilberto
- Simon, Julia
- Simon, Lidia
- Simons-de Ridder, Alexandra
- Simonsen, Allan
- Simons, Timmy
- Simón, Unai
- Simpkins, Charles
- Simpson, Jenny
- Simpson, O. J.
- Simpson, Sean
- Simpson, Tom
- Simpson, Webb
- Simunic, Josip
- Sinclair, Christine
- Sindelar, Matthias
- Sindern, Irene
- Sinek, Franz
- Sing, Albert
- Singer, Christina
- Singh, Vijay
- Sinizina, Victoria
- Sinkewitz, Patrik
- Sinkiewicz, Lukas
- Sinner, Jannik
- Sinner, Stephan
- Sinn, Helmut
- Sintschenko, Oleksandr
- Sirch, Cornelia
- Sirma, Susan
- Sissoko, Moussa
- Sitt, Peter
- Sitzberger, Kenneth R.
- Sivori, Omar
- Six, Didier
- Sjöberg, Patrik
- Sjöstrand, Johan
- Sjöström, Sarah
- Skaardal, Atle
- Skaarup, Per
- Skah, Khalid
- Skamrahl, Erwin
- Skanaker, Ragnar
- Skari, Bente
- Skel, Steffen
- Skelton, Nick
- Skibbe, Michael
- Skjelbred, Per
- Skoblar, Josip
- Skoblikowa, Lidija
- Skoda, Leos
- Skoff, Horst
- Skoglund, Ann-Louise
- Skolimowska, Kamila
- Skov, Robert
- Skrbic, Dragan
- Skripnik, Viktor
- Skuhravy, Tomas
- Slater, Kelly
- Slatew, Assen
- Slatewa, Swetla
- Slawyk, Markku
- Sleptsowa, Swetlana
- Slezak, Miroslav
- Slight, Aaron
- Sljivo, Edhem
- Slomka, Mirko
- Sloothaak, Franke
- Slott Petersen, Sara
- Slozil, Pavel
- Slupianek, Ilona
- Slutskaja, Irina
- Sluzki, Leonid
- Smalling, Chris
- Smazal, Heiko
- Smeekens, Jan
- Smetanina, Raisa
- Smets, Joël
- Smid, Tomas
- Smieszek, Karlheinz
- Smigun-Vähi, Kristina
- Smirnow, Witali
- Smirnow, Wladimir
- Smirnow, Wladimir
- Smisek, Sandra
- Smith, Calvin
- Smith, Cameron
- Smith, Emmitt
- Smith, Fanny
- Smith, Jaleen
- Smith, Kelly
- Smith, Michael
- Smith, Mike
- Smith, Rebecca
- Smith, Stan
- Smith, Tatjana
- Smith, Tommie
- Smits, Inger
- Smits, Kay
- Smits, Xenia
- Smolarek, Euzebiusz
- Smolarek, Wlodzimierz
- Smolders, Harrie
- Smolinski, Martin
- Smolow, Fjodor Michailowitsch
- Smuda, Franciszek
- Smuda-Fröschl, Sigrid
- Smyers, Karen
- Smylie, Elizabeth
- Smyslov, Wassili