24th World Science Fiction Convention
| Tricon, the 24th World Science Fiction Convention | |
|---|---|
| Genre | Science fiction | 
| Dates | 1–5 September 1966 | 
| Venue | Sheraton Cleveland | 
| Location(s) | Cleveland, Ohio | 
| Country | United States | 
| Attendance | ~850 | 
| Filing status | Non-profit | 
The 24th World Science Fiction Convention (Worldcon), also known as Tricon, was held on 1–5 September 1966 at the Sheraton-Cleveland in Cleveland, Ohio, United States. Officially, the convention was hosted by three cities in the region: Cincinnati, Ohio, Cleveland, Ohio, and Detroit, Michigan; hence the name "Tricon".
The three co-chairmen of that Worldcon each represented their city's fandom; they were Ben Jason of Cleveland, Howard DeVore of Detroit, and Lou Tabakow of Cincinnati.