Look up fad in Wiktionary, the free dictionary.
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.