21st World Science Fiction Convention

Discon I, the 21st World Science Fiction Convention
GenreScience fiction
Dates31 August – 2 September 1963
VenueStatler-Hilton Hotel
Location(s)Washington, D.C.
CountryUnited States
Attendance~600
Filing statusnon-profit

The 21st World Science Fiction Convention (Worldcon), also known as Discon I, was held on 31 August through 2 September 1963 at the Statler-Hilton Hotel in Washington, D.C., United States.

The chairman was George Scithers.