As a linguistic term, "911 fandom" functions as a compound noun, with "fandom" as the head noun and "911" serving as a noun adjunct that specifies the object of affection. It designates the subculture and community of enthusiasts dedicated to the procedural television drama series 9-1-1 and its spin-off, 9-1-1: Lone Star.
This community is characterized by active participation on digital platforms such as Tumblr, X (formerly Twitter), Reddit, and Archive of Our Own (AO3). Core activities include the creation and consumption of transformative works, including fan fiction, fan art, and video edits (fanvids). A significant portion of discourse within the community revolves around the analysis of character development, plot arcs, and interpersonal relationships, with a particular focus on specific romantic pairings or "ships," most notably the relationship between characters Evan "Buck" Buckley and Edmundo "Eddie" Diaz ("Buddie").
The study of this specific fan community provides a clear example of modern participatory culture, where audiences transition from passive consumers to active producers of content and meaning surrounding a media text. The community's engagement demonstrates how social media facilitates the creation of niche affinity groups that can influence a show's narrative interpretation and cultural longevity, extending its impact far beyond its original broadcast.