Folia is a well-known, simple musical framework that has been used for songs, dances and sets of variations.

Folia or Folía may also refer to:

• Folias, by Alessandro Piccinini (1566–c.1638)
• Folias, by Francesco Corbetta (c.1615–1681)
• Folia, by Giovanni Paolo Foscarini (fl. 1621–1649)
• Folias, by Lucas Ruis Ribayaz (c.1626–1667)
• Folias, by Antonio de Cabezón (1510–1566)
• Folia, by Bernardo Storace (1637–1707)
• Folias, by Gaspar Sanz (1640–1710)
• Folias, for guitar, by Francisco Guerau (1649–1721)
• Folias (a 3), by Andrea Falconieri (1650)
• "La folia" Violin Sonata Op. 5 No. 12 in D minor, by Corelli (1653–1713)
• "La folia", for viola, by Marin Marais (1656-1728)
• Variations on 'La Folia', by Alessandro Scarlatti (1660–1725)
• La Folia, by Antonio Vivaldi (1678–1741)
• "La Folia" Concerto grosso after Corelli, No. 12 in D minor Geminiani (1687–1762)
• Folias de España, 20 variations and fugue for guitar, by Manuel Ponce (1930)
• La Folia Variants, by Nils Vigeland (born 1950)
• Folias, for guitar & orchestra by Roberto Sierra (2004)

• La Folia, a 1982 album by Atrium Musicae de Madrid, Gregorio Paniagua
• Folias & Canarios, a 1994 album by Jordi Savall
• Folías (album), a 2007 album by el Guincho
• Folias, a 2011 recording by Nils Mönkemeyer
• La Folia, a 2014 album by Jordi Savall

• Folia (tunicate), a genus of animals in the family Oikopleuridae
• La Folia Barockorchester, a 2007 chamber music ensemble based in Dresden
• Folias Flute and Guitar Duo, an American chamber music duo

• Folium (disambiguation), the plural of folia