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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 | Pilar Sánchez Vicente | Javier Sánchez-Reyes |
| Ramiro Sanchiz | Antonio Sancho Villar | Fraser Sandercombe | William Sanders | Sandro Sandrelli |
| José Miguel Sanfeliú | J. F. Sanmartín | Albert Sans | Felipe Santa-Cruz | José Miguel Santamaría |
| Juan Manuel Santiago | Domingo Santos | Julio César Santoyo | Viktor Saparin | Andrzej Sapkowski |
| Pamela Sargent | Julia Sauleda Suris | Saurio | Arthur Dekker Savage | Vladimir Savcenko |
| 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 Spencer |
| William Browning 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 |
| Carlota Suárez | 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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