- Broad Universe: promoting science fiction, fantasy, and horror by women.
- Canberra Speculative Fiction Guild: The site for writers of speculative fiction in Canberra, Australia.
- Carl Brandon Society: addressing the representation of people of color in science fiction, fantasy, and horror.
- Dark Echo Horror: Organizations for Horror Writers.
- Fantastic Queensland Association Inc: An umbrella organisation for writers, educators, film makers, computer game producers, publishers, and television interests in Queensland, Australia.
- Futuristic, Fantasy & Paranormal Chapter of Romance Writers of America: Current President is Julie Mensch. Members of FF&P must be members in good standing of RWA. Romance fiction with FF&P elements.
- HWA: Horror Writers Association.
- International Women's Writing Guild: P.O. Box 810, Gracie Station; New York, NY 10028-0082; Tel: (212)737-7536 /
Fax:(212)737-9469 / E-mail: email@example.com Network founded in 1976 for the "personal and professional empowerment of women through writing."
- The Interstitial Arts Foundation: The IAF was founded by a group of literary, visual, musical, and performance artists for the purpose of creating and promoting Interstitial Art. Crosslisted.
- NWU: National Writers Union.
- SFPA: Science Fiction Poetry Association; gives the annual Rhysling Award for "Best Short Poem" and "Best Long Poem", covering sf, fantasy, horror, surrealism.
- SFWA: Science Fiction and Fantasy Writers of America; publishes the SFWA Bulletin, with writing articles and market info.