| Nippon 2007, the 65th World Science Fiction Convention | |
| Venue: | Pacifico Yokohama Convention Center |
| Dates: | 30 August–3 September 2007 |
| Organizer: | Japanese Association for Science Fiction International Communication |
| Filing: | registered non-profit |
| Attendance: | 2,788 |
| Website: | nippon2007.us (English-language site) |
The 65th World Science Fiction Convention (Worldcon), also known as Nippon 2007, was held on 30 August–3 September 2007 at the Pacifico Yokohama Convention Center and adjoining hotels in Yokohama, Japan.
The organising committee was chaired by Hiroaki Inoue.
This convention was also the 46th Annual Nihon SF Taikai.
This was the first Worldcon held in Asia.
Attendance was 2,788, of whom 1,578 were from Japan.
The base of the 2007 Hugo Award included a silhouette of Mount Fuji as a backdrop and a statue of the Japanese superhero Ultraman standing just taller than the iconic Hugo Award rocket.
The Hugo Award nominations were announced on 28 March 2007. A correction was issued a few days later when award officials were notified that a computing error had resulted in the film Pan's Labyrinth being left off the nomination list for Best Dramatic Presentation, Long Form.
The members of Nippon 2007 selected Montréal, Québec as the hosting city for the 67th World Science Fiction Convention, to be held in 2009.