The 66th World Science Fiction Convention (Worldcon), also known as Denvention 3, was held on 6–10 August 2008 at the Colorado Convention Center and the Sheraton Denver Downtown Hotel in Denver, Colorado, United States. The organizing committee was chaired by Kent Bloom.

Participants

Attendance was 3,751.

Guests of Honor

Other participants

In addition to the Guests of Honor, the convention has announced the names of the people participating in the convention program.

Awards

2008 Hugo Awards

Other awards

Worldcon site selection

At L.A.con IV, Denver won the right to host the 66th Worldcon, on the third ballot by 12 votes in one of the closest races in Worldcon site selection history. The members of Denvention 3 selected Melbourne as the hosting city for the 68th World Science Fiction Convention, to be held in 2010.