Fads is plural for fad, a practice or interest followed for a time with exaggerated zeal.

Fads or FADS may also refer to:

FMN adenylyltransferase FADS (candy), an Australian candy cigarette The FADS gene locus, containing the genes FADS1 and FADS2, which respectively encode the enzymes FADS1 and FADS2

See also Fad (disambiguation)