Fenchone is an organic compound classified as a monoterpenoid and a ketone.

Fenchone is a constituent of absinthe and the essential oil of fennel.

Fenchone is used as a flavor in foods and in perfumery.

[2] Other names for fenchone include dl-fenchone and (±)-fenchone.

The d-fenchone enantiomer occurs in pure form in wild, bitter and sweet fennel plants and seeds, whereas the l-fenchone enantiomer occurs in pure form in wormwood, tansy, and cedarleaf.