Hydra generally refers to: Lernaean Hydra, a many-headed serpent in Greek mythology Hydra (genus), a genus of simple freshwater animals belonging to the phylum Cnidaria Hydra or The Hydra may also refer to: Astronomy Hydra (constellation) Hydra (moon), a satellite of Pluto Computing Hydra (chess), a chess computer Hydra (digital repository) Hydra (operating system) Hydra (software) Hydra 100, a multi-GPU hardware solution HYDRA Game Development Kit, a development system by André LaMothe Razer Hydra, a game controller NEC HYDRAstor, a storage system Fictional entities Hydra (comics), a fictional organization in the Marvel Universe Hydra (Marvel Cinematic Universe), an organisation in the Marvel Cinematic Universe based on the comics counterpart Hydra (Dungeons & Dragons), a fictional monster in D&D Hydra (Transformers), a character in Transformers The Hydra, a fictional organization in The Phantom Hydra, a character in UFO Ultramaiden Valkyrie The Hydra, a fictional deity created by Henry Kuttner Mother Hydra, the co-ruler of the Deep One race in the Cthulhu Mythos The Hydra, a fictional fighter jet in Grand Theft Auto: San Andreas and Grand Theft Auto Online The Hydra, a fictional machine in Kirby Air Ride Film and television Hydra (film), a 2008 monster movie Hydra (Chuck), a fictional database on Chuck Hydra, a fictional Dharma Initiative station on Lost Music Hydra Entertainment, the hip-hop record label Hydra (band), an American southern rock band in the 1970s Hydra (Otep album), 2013 Hydra, a 2005 album by Satariel (band) Hydra (Toto album), 1979, or the title song Hydra (Within Temptation album), 2014 Hydra (Iris album), a 2008 album by Iris "Hydra", a 2000 song by Dir En Grey from Macabre "Hydra", a song by Twilight Force from the 2019 album Dawn of the Dragonstar "HYDRA", a 2018 song by Myth & Roid People Hydra (skater), roller derby skater Hydra (wrestler), American professional wrestler Places Hydra, Algeria, a neighbourhood and a municipality in Algiers Hydra (island), an island of Greece Ships Hydra (ship), a hydrogen ship Greek ironclad Hydra, a French-built ironclad warship launched in 1889 Greek destroyer Hydra, a Dardo-class destroyer launched in 1932 Greek frigate Hydra, a MEKO 200-type frigate launched in 1992, lead ship of the Hydra class frigate HMS Hydra (1797), a 38-gun fifth rate HMS Hydra (1838), a wooden steam paddle sloop Hydra-class sloop, a class of British steam sloops HMS Hydra (1871), a Cyclops-class turret ship HMS Hydra (1912), an Acheron-class destroyer HMS Hydra J275),