The 39th World Science Fiction Convention (Worldcon), also known as Denvention II, was held 3–7 September 1981 at the Denver Hilton Hotel in Denver, Colorado, USA. The chairmen were Suzanne Carnival and Don C. Thompson. The guests of honor were Clifford D. Simak (pro), C. L. Moore (pro), and Rusty Hevelin (fan). Extra special guest was Robert Heinlein who had been the guest of honor at the 1941 Worldcon, the first to be held in Denver. The toastmaster was Ed Bryant. Total attendance was 3,792.
| Preceded by 38th World Science Fiction Convention Noreascon Two in Boston, USA (1980) |
List of Worldcons 39th World Science Fiction Convention in Denver, USA (1981) |
Succeeded by 40th World Science Fiction Convention Chicon IV in Chicago, USA (1982) |