Joana is a given name, equivalent to Joanna in Catalan (IPA: [ʒuˈanə]) and Portuguese (IPA: [ʒuˈɐnɐ]). The Galician form of the name is Xoana (IPA: [ʃoˈanɐ]). It may refer to:

• Joana Angélica (1761–1822), Brazilian Conceptionist nun, belonging to the Reformed Order of Our Lady of Conception, and martyr of the Brazilian Independence
• Joana Benedek – a Mexican actress
• Joana of Braganza, a.k.a. Joana of Portugal (1635-1653) – a Portuguese princess, daughter of John IV
• Joana Ceddia – a Brazilian-Canadian YouTuber
• Joana Glaza – the Lithuanian lead singer of rock group Joana and the Wolf
• Joana Kuntz, professor of psychology in New Zealand
• Joana Prado – a Brazilian actress
• Joana Rokomatu – a Fijian chief
• Joana Zimmer – a German pop music singer