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| — S — |
| Oliver Saari | Rafael Sabatini | Fred Saberhagen | Noemí Sabugal | Sara Sacristán |
| Jimina Sadabú | A. L. Sadler | Carlos Sáez Pla | Carl Sagan | Ana Saiz |
| Carlos Saiz Cidoncha | Ana Saiz García | José Manuel Sala Díaz | Vicent Sala Enguix | Diego Salcedo |
| Ian Sales | Emilio Salgari | J. D. Salinger | Tomás Salvador | R. A. Salvatore |
| Anabel Samani | Luciano de Samosata | San Juan | Ramón San Miguel | Guillem Sánchez |
| Juan Miguel G. S. Sánchez | Eugenio Sánchez Arrate | Juanjo Sánchez Arreseigor | Sánchez Ávila | Fermín Sánchez Carracedo |
| José María Sánchez de Toca Catalá | Francisco Javier Sánchez Donate | Alicia Sánchez Martínez | Javier Sánchez-Reyes | Ramiro Sanchiz |
| Antonio Sancho Villar | Fraser Sandercombe | William Sanders | Sandro Sandrelli | José Miguel Sanfeliú |
| Albert Sans | Felipe Santa-Cruz | José Miguel Santamaría | Juan Manuel Santiago | Domingo Santos |
| Julio César Santoyo | Andrzej Sapkowski | Pamela Sargent | Julia Sauleda Suris | Saurio |
| Arthur Dekker Savage | Vladimir Savchenko | Robert J. Sawyer | Marc Saylor | Sergio Schaaf |
| Nat Schachner | Nat Schachner | Dore Schary | Stanley Schmidt | James H. Schmitz |
| Carter Scholtz | Darrell Schweitzer | Leonardo Sciascia | Robin Scott | Walter Scott |
| Christina Scull | Richard F. Searight | Valentin Sécher | Alex Segura | Pascual Segura |
| Sally A. Sellers | Víctor Selles | Arthur Sellings | Iulian Semionov | Julio Septién |
| Aránzazu Serrano | Jaime Serrano | Rubén Serrano | Pamela F. Service | William Shakespeare |
| Neil Shapiro | William Shatner | Bob Shaw | Bob Shaw | Irwin Shaw |
| Nisi Shawi | Robert Sheckley | Walter Shedlofsky | Arthur Sheekman | Charles Sheffield |
| Racoona Sheldon | Mary W. Shelley | Lucius Shepard | T. L. Sherred | Lewis Shiner |
| John Shirley | Wilma Shore | Joe Shuster | Neal Shusterman | Dani Sierra |
| Ricardo Silva | Robert Silverberg | Raúl Silvestre | Laura Silvestri | Clifford D. Simak |
| Juan Simeran | Dan Simmons | Louise Simonson | Walter Simonson | Isaac Bashevis Singer |
| Johanna Sinisalo | Óscar Sipán | Carlos Sisi | Michael Skeet | Jack Skillingstead |
| John T. Sladeck | Angela Slatter | Frank G. Slaughter | Henry Slesar | A. C. H. Smith |
| Clark Ashton Smith | Cordwainer Smith | E. E. «doc» Smith | George O. Smith | Michel Marshall Smith |
| Paula Smith | Stephanie A. Smith | Jô Soares | Guillermo Solana | Núria Solanellas |
| Albert Solanes | Aitor Solar | Albert Solé | Pere Soler | José Carlos Somoza |
| David Soriano | Marc R. Soto | Roberto de Sousa Causo | Marcial Souto | Bud Sparhawk |
| William Browning Spencer | William Spencer | Steven Spielberg | Norman Spinrad | Nancy Springer |
| Sherwood Springer | Margaret St. Clair | Brian Stableford | H. deVere Stacpoole | Henric Stahl |
| Anna Starobinets | Allen Steele | John Steinbeck | Neal Stephenson | Bruce Sterling |
| Kenneth Sterling | G. B. Stern | Roger Stern | Jacques Sternberg | James Stevens Arce |
| James Stevens-Arce | Lynnda Stevenson | Robert Louis Stevenson | Lewis Stillman | S. M. Stirling |
| Dal Stivens | Bram Stoker | Leslie Frances Stone | Mathew Stover | J. Michael Straczynski |
| Peter Straub | Charles Stross | Arkadi Strugatski | Boris Strugatski | Theodore Sturgeon |
| Snorri Stúrluson | José Antonio Suárez | Lisardo Suárez | Patricia Suárez | Carlos Suchowolski |
| Suetonio | Tim Sullivan | Francisco José Suñer Iglesias | J. Paul Suter | Darko Suvin |
| Curt Swan | Thomas Burnett Swann | Michel Swanwick | Jonathan Swift | Rachel Swirsky |
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