25th World Science Fiction Convention
| NyCon 3, the 25th World Science Fiction Convention | |
|---|---|
| Genre | Science fiction | 
| Dates | 31 August–4 September 1967 | 
| Venue | Statler Hilton Hotel | 
| Location(s) | New York City | 
| Country | United States | 
| Attendance | ~1,500 | 
| Filing status | non-profit | 
The 25th World Science Fiction Convention (Worldcon), also known as NyCon 3 or Nycon 3, was held on 31 August–4 September 1967 at the Statler Hilton Hotel in New York City, New York.
The chairmen were Ted White and Dave Van Arnam.