The Supergrass
- taona: 1985
- Firenena: United Kingdom
- Genre: Comedy
- Studio: 14 Old Bond Street Leasing, Comic Strip Production, Michael White Productions, Film4 Productions
- Keyword: undercover agent, drug dealing, cross dressing, vomiting
- tale: Peter Richardson
- Cast: Adrian Edmondson, Jennifer Saunders, Peter Richardson, Robbie Coltrane, Nigel Planer, Keith Allen