Twilight fandom is the community of fans of the Twilight series of novels, movies and other related media. The fans are known as Twilighters or Fanpires while the especially dedicated fans are called Twihards. Some fans are known as Twerds which is a portmanteau of the words "Twilight" and "nerd". 
There has been conflict between the fans of Twilight and the fans of other series. At Comic-Con in 2008, large numbers of female Twilight fans came to see the panel of actors from the Twilight movies. This upset existing male fans of older genres who protested at this intrusion, "Twilight Ruined Comic-Con".
The fandom was publicly recognized by major news publications in 2010, by the Los Angeles Times, and in 2014, by The Wire, a publication owned by the Atlantic Monthly Group. Both articles discuss the fandom's growing influence as its population of followers grew over time. The impact of the vibrant Twilight fandom and its lasting legacy is explored in a book by Laurena Aker: Fan Phenomena: The Twilight Saga.
- Aker Laurena, ed. (2016), Fan Phenomena:The Twilight Saga, Intellect Ltd, ISBN 1783206500
- Erzen, Tanya (2012), Fanpire: The Twilight Saga and the Women Who Love it, Beacon Press, ISBN 9780807006344
- Hiscock, John (13 Nov 2012), "Twilight fans: No wonder they are called Twihards", The Daily Telegraph
- Larsen, Katherine; Zubernis, Lynn (2013), Fangasm: Supernatural Fangirls, University of Iowa Press, ISBN 9781609381981
- Schau, Hope Jenson; Buchanan-Oliver, Margo (2012), "'The Creation of Inspired Lives': Female Fan Engagement With the Twilight saga", Gender, Culture, and Consumer Behavior, Taylor & Francis, ISBN 9781136463488
- Sheffield, Jessica; Merlo, Elyse (2010), "Biting Back", Bitten by Twilight: Youth Culture, Media, & the Vampire Franchise, Peter Lang, ISBN 9781433108945, ISSN 1555-1814
- Spencer, Liv (2010), Love Bites: The Unofficial Saga of Twilight, ECW Press, ISBN 9781770901667