Chaff is dry inedible plant material.
Chaff may also refer to:
Chaff (countermeasure), a radar countermeasure for aircraft or other targets Chaff algorithm, an algorithm for solving instances of the boolean satisfiability problem Chaffing and winnowing, a method in cryptography to protect a message without encryption Chaff (newspaper), a former students' newspaper of Massey University Students' Association
See also "Gumbo Chaff" or "Gombo Chaff", an American song Chaff cutter, a mechanical device for cutting straw or hay