Fantasia can refer to one of the following:

• Fantasia is a free musical composition structured according to the composer's fancy.
• Fantasia is a 1939 novel by Warwick Deeping.
• Fantasia (1940) is Walt Disney's motion picture experiment with animation and music.
• Fantasia is the name of a fictional world in the movie version of The Neverending Story containing all of human fantasy; in the book it is called Fantastica.
• Fantasia Barrino, the 2004 American Idol contest winner, who sometimes goes by "Fantasia" for public appearances.
• Fantasia is a 1986 album by Franco De Vita. It produced the hits "Solo Importas Tu," "Aqui Estas Otra Vez" and the title song.