CoastCon is Mississippi's longest running and largest science fiction, fantasy and gaming convention.

CoastCon, Inc. and its ten-member volunteer board develop events and gatherings to promote reading, education, fellowship, and science fiction, fantasy and gaming in all formats across the Southern United States, for over forty years.

Besides the largest genre-themed vendor's room in the state, the art show and auction, a charity auction, and Saturday costume contest and evening dance party, each year members and attendees of CoastCon can participate in three days of events including over 72 hours of panels, seminars, demonstrations, and workshops on topics that include activities on writing, art, anime, gaming, science fiction and fantasy literature, comic books, costuming, hard science, online media, fandom, genre film and television, table-top, card and miniatures gaming, robotics, and filk, to name only a few.

[5] CoastCon past guests include stars of many areas of interest to fandom.

For 2024 CoastCon Inc. has chosen CASA of Harrison & Stone Counties as its main charity.