Devil's tongue may refer to:
Amorphophallus konjac, a flowering plant native to southwest China Dominican Devil's Tongue, or Red Savina pepper, a cultivar of the habanero chili two species of cactus from genus Opuntia Opuntia humifusa, also known as the Eastern prickly pear, native to eastern United States and northeastern Mexico Opuntia ammophila, native to Florida Devil's Tongue Battery a former artillery battery in the British Overseas Territory of Gibraltar