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Look up infest in Wiktionary, the free dictionary.
Infest may refer to:
- Infest, wild animal overpopulation, much in the same way that cockroaches do
- Infest (album), a 2000 hard rock album by Papa Roach
- Infest (band), American hardcore band
- Infest (festival), an alternative electronic music festival in Bradford, UK since 1998
- In-Fest, an indoor rock music festival based in London, England since 2007