Fandom
Fandom (from the noun fan and the affix -dom, as in kingdom, dukedom, etc.) or fanbase is a name used for a group of people (called "fans") who are interested in something. A fandom can be about any interest or activity. Fandoms can be for example about hobbies, genres or fashions, book or movie series, or even individual celebrities.
Fandom Media
Cosplayer dressed as Katniss Everdeen during the Montreal Comiccon, July 2015
Banquet at the 14th World Science Fiction Convention in New York City in 1956
Fan art for the Sherlock TV series on an English telephone booth