Hyacinth or Hyacinthus may refer to:

Nature

Plants

* Hyacinth (plant), genus ''Hyacinthus'' ** ''Hyacinthus orientalis'', common hyacinth * Grape hyacinth, ''Muscari'', a genus of perennial bulbous plants native to Eurasia * Hyacinth bean, ''Lablab'', a genus of bean in the family Fabaceae with the sole species ''Lablab purpureus'' * Water hyacinth, ''Pontederia crassipes'', aquatic plant native to the Amazon basin

Animals

* Hyacinth macaw, a species of parrot * List of pigeon breeds#H, Hyacinth, a breed of pigeon

People

* Flora Hyacinth (born 1966), retired female track and field athlete * Hyacinth (given name), list of people with this name * Hyacinth (mythology), divine hero in Greek mythology * Hyacinthus the Lacedaemonian (in Greek mythology), who sacrificed his daughters to Athena or Persephone * Hyacinth of Caesarea (died 108), early Christian martyr saint * Hyacinth and Protus (martyred 257–9), Christian saints * Hyacinth of Poland (1185–1257), Polish priest, canonized 1594 * Hyacinth (Bichurin) (1777–1853), one of the founding fathers of Sinology

Arts and entertainment

* "Hyacinth", a 2004 song by Aya Matsuura * "Hyacinth", a 2021 song by Serpentwithfeet from ''Deacon (album), Deacon'' * Hyacinth Bucket, a character in ''Keeping Up Appearances'' * Hyacinth Bridgerton, a character in ''Bridgerton''

Mineral

* Hyacinth (mineral), Hyacinth, alternative name for yellow zircon, the mineral * Jacinth, Hyacinth, a gemstone sometimes called jacinth

Vessels

* HMS Hyacinth, HMS ''Hyacinth'' * USS Hyacinth, USS ''Hyacinth''

Other uses

* Hyacinth, Virginia * Confection of hyacinth, ancient medical treatment (that used zircon)