Fad (disambiguation)

A fad is a practice or interest followed for a time with exaggerated zeal.

Fad or FAD may also refer to:


 * Familial Alzheimer disease, an uncommon form of Alzheimer's disease
 * Flavin adenine dinucleotide is a redox cofactor chemical compound.
 * Fad Browne (1906–1991), Irish politician
 * Fad diet
 * First appearance datum, the date of the oldest known fossil of a living species
 * Fish aggregating device, for fishing
 * Flying Ant Day, a period of increased perception of the nuptial flight for ants prompted by changes in weather.
 * Wagi language of Papua New Guinea, ISO 639-3 code
 * Food availability decline; see Theories of famines
 * Fusil Automático Doble, a rifle used by the Peruvian Army.