Titania may refer to:

• Titania (moon), the largest moon of the planet Uranus
• 593 Titania, an asteroid

• Titania, an alternate name for titanium dioxide

• Titania (A Midsummer Night's Dream), the Queen of the Fairies in William Shakespeare's A Midsummer Night's Dream
• Titania (DC Comics), a DC Comics character
• Titania (Marvel Comics), a Marvel Comics supervillain
• Titania (Grapplers) or Lascivious, a Marvel Comics supervillain
• Titania (Fire Emblem), a paladin in Fire Emblem: Path of Radiance
• Titania (Dungeons & Dragons), a fey deity in Dungeons & Dragons
• Titania (Gargoyles), a character in Gargoyles
• Titania, a fictional computer in Starship Titanic
• Titania or Asuna, a character in Sword Art Online
• Titania, a fictional demon in Shin Megami Tensei
• Titania, a fictional kingdom in Odin Sphere
• Titania or Erza Scarlet, a character in Fairy Tail
• Titania, a fictional planet in the Star Fox Series
• Titania, a fictional character in The Ancient Magus' Bride
• Queen Titania, recurring character in the French Tara Duncan book series

• SS Titania (1912), a coaster in service 1939–1945
• HMS Titania, a Royal Navy submarine depot ship, 1915–1949
• USS Titania, a U.S. Navy Arcturus-class attack cargo ship commissioned in 1942
• Fairey Titania, a class of sailing yacht built by Fairey Marine Ltd
• Titania, a clipper operated by the Hudson's Bay Company from 1885 to 1893; see Hudson's Bay Company vessels

• Titania (ballet), an 1866 ballet choreographed by Marius Petipa to music by Cesare Pugni
• Titania Peak, a rock peak on Alexander Island, Antarctica
• "Titania", a poem by Gustaf Fröding
• "Titania", a song by Mando Diao
• Titania AS, a titanium mining company with a mine in Sokndal, Norway

• All pages with titles containing Titania
• Titania's Palace, a miniature castle
• Tytania, Japanese sci-fi novel series written by Yoshiki Tanaka
• Tatiana