| Chicon V, the 49th World Science Fiction Convention | |
| Dates: | 29 August–2 September 1991 |
| Filing: | 501(c)(3) non-profit |
| Attendance: | 5,661 |
The 49th World Science Fiction Convention (Worldcon), also known as Chicon V, was held on 29 August–2 September 1991 at the Hyatt Regency in Chicago, Illinois, United States.
The convention was chaired by Kathleen Meyer.
Attendance was 5,661.
Other participants included author Clive Barker and psychologist Timothy Leary.