Swamp rat(s) may refer to:
Animals Swamp rat is a common name for a number of not closely related types of semiaquatic rodents of superfamily Muroidea, including: Andean swamp rat (Neotomys ebriosus), a cricetid Australian swamp rat (Rattus lutreolus), a murid Malacomys, three murid species of Africa: Scapteromys, three cricetid species from southeastern South America: Swamp rice rat (Oryzomys palustris), a cricetid of southeastern North America
It may also refer to the semiaquatic echimyid known as the coypu.
Other a series of famous Top Fuel dragsters created by Don Garlits Swamp Ratte', former name of hacker Grandmaster Ratte' A subset of hillbilly or redneck that lives near the bayou.