Swamp fever may refer to:
Medicine Equine infectious anemia, a disease Leptospirosis, a disease Malaria, a disease Mumps, a disease
Video games Swamp fever, a disease in The Elder Scrolls series of role-playing video games Swamp Fever, a campaign in the 2009 video game Left 4 Dead 2 Swamp Fever, a disease in the 2015 video game Ark: Survival Evolved