Ravencroft
| Ravencroft Institute | |
|---|---|
| First appearance | Web of Spider-Man Annual #10 (1994) | 
| Created by | J. M. DeMatteis Sal Buscema | 
| In-universe information | |
| Type | Prison | 
| Locations | Westchester County, New York | 
| Marvel Comics | |
The Ravencroft Institute is a fictional maximum security prison for the criminally insane appearing in comic books published by Marvel Comics. The place later grew to one of the leading maximum-security facilities in the country specializing in the treatment of superhuman criminals.