Stygian

• Stygia (moth), a genus of moth
• Stygian owl (Asio stygius), a species of owl
• Stygian ringlet (Erebia styx), a butterfly belonging to the subfamily Satyrinae

• Stygia (Conan), a setting among the fictional realms of Conan the Barbarian
• Stygian Witches, name used in Clash of Titans films for the three Graeae of Greek mythology
• Stygian Penal Colony, a maximum security prison used by the Multiverse Authority in The One
• Stygian Iron, an iron sword from the Rick Riordan novels
• A giant worm and core boss in the Fantasy action video game Darksiders
• The highest difficulty in the video game Darkest Dungeon
• Stygian, a 2000 film, the directorial debut of James Wan
• Stygian, also known as the Pony of Shadows, a character in My Little Pony: Friendship Is Magic
• Stygian doll, an undead fetish (monster) from Act III in video game Diablo II
• Stygius, the first weapon obtained in the video game Hades (video game)
• The Stygian triplets, a trio of demons in Kevin Smith’s 1999 film Dogma.

• Stygian Cove, in the South Orkney Islands
• Stygian Software; see Underrail
• Stygian Vistas, a 1997 EP by Soma
• {{HMS|Stygian}}, an S-class submarine of the Royal Navy
• Stygian blue, a deeply saturated blue-black impossible color
• "Travel in Stygian", a song by the band Iced Earth
• " Scribes of the Stygian", a song by the band Incantation (American band)

• Styx River (disambiguation)
• Styx (disambiguation)

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