|Country of origin||United States|
|Headquarters location||Flatiron Building, New York City|
|Key people||Tom Doherty|
|Publication types||Books, ebooks|
|Imprints||Forge, Starscape, Tor Teen, Tor.com|
Tor Books is the primary imprint of Tom Doherty Associates LLC publishing company, based in New York City, US. It is noted for its science fiction and fantasy titles, and publishes the online science fiction magazine Tor.com.
Tor was founded by Tom Doherty in 1980 and sold to St. Martin's Press in 1987. Along with St. Martin's Press, Henry Holt and Farrar, Straus and Giroux, it became part of the Holtzbrinck group, now part of the Macmillan in the US. 
Tor is the primary imprint of Tom Doherty Associates. There is also the Forge imprint that publishes an array of fictional titles, including historical novels and thrillers. Tor Books also publishes two imprints for young readers: Starscape (for readers 10 years of age and up) and Tor Teen (for readers 13 years of age and up). Tor Books also has the Tor.com imprint that focuses on short works such as novellas, shorter novels and serializations.
A United Kingdom sister imprint, Tor UK, also exists and specializes in science fiction, fantasy, and horror, while also publishing young adult crossover fiction based on computer games franchises. Tor UK maintains an open submission policy.
Notable authors published by Tor and Forge include Kevin J. Anderson, Steven Brust, Orson Scott Card, Jonathan Carroll, Charles de Lint, Philip K. Dick, Cory Doctorow, Steven Erikson, Terry Goodkind, Steven Gould, Brian Herbert, Glen Hirshberg, Robert Jordan, Andre Norton, Harold Robbins, Brandon Sanderson, John Scalzi, V. E. Schwab, Skyler White, and Gene Wolfe.
Tor publishes a range of their works as e-books and, in 2012, Doherty announced that his imprints would sell only DRM-free e-books by July of that year. One year later, Tor stated that it would continue this practice, as the removal of DRM had not been detrimental to its e-book business.
Tor won the Locus Magazine poll for best science fiction publisher in 29 consecutive years from 1988 to 2016 inclusive. In March 2014, the Worlds Without Ends website listed Tor as the second-most awarded and nominated publisher for science fiction, fantasy and horror books, after Gollancz. As of March 27, 2014, Tor has received 316 nominations and 54 wins for 723 novels, written by 197 authors.
- "A Blog From the Tor UK Team and Authors". Tor Books. Pan Macmillan. 2014. Retrieved 27 March 2014.
- "Tor/Forge". Pan MacMillan. Pan MacMillan. 2014. Retrieved 27 March 2014.
- Announcing Tor.com the Imprint. May 28, 2014.
- "Tor/Forge". Macmillan Publishers. 2014.
- "Tor/Forge E-book Titles to Go DRM-Free". Tor.com. Retrieved 24 April 2012.
- Geuss, Megan (2013-05-04). "Tor Books says cutting DRM out of its e-books hasn't hurt the business - A look at the sci-fi publisher a year after it announced it would do away with DRM.". Arstechnica. Retrieved 2013-07-07.
Early this week, Tor Books, a subsidiary of Tom Doherty Associates and the world's leading publisher of science fiction, gave an update on how its decision to do away with Digital Rights Management (DRM) schemes has impacted the company. Long story short: it hasn't, really.
- "The Science Fiction Awards Database: Locus Award Winners by Category - Publishers". The Science Fiction Awards Database. Retrieved 2016-07-10.
- "Top SF/F/H Publishers". Worlds Without End. March 2014. Retrieved 27 March 2014.