Nausicaa is a character in Homer's epic poem Odyssey.

Nausicaa, Nausicaä, or Nausikaa, derived from the Greek name Nαυσικάα, may also refer to:

• Nausicaa Bonnín (born 1985), Spanish actress
• Nausicaä (Nausicaä of the Valley of the Wind), the main character in Hayao Miyazaki's Nausicaä of the Valley of the Wind
• Nausicaa (Leighton), an 1878 painting by Frederic Leighton
• Nausicaa (opera), a 1961 opera by Peggy Glanville-Hicks
• "Nausicaa" (Ulysses episode) an episode in James Joyce's novel Ulysses
• Nausicaá Centre National de la Mer, a public aquarium in Boulogne-sur-Mer, France
• Nausicaa.net, a fan website about Studio Ghibli, Hayao Miyazaki, and related topics
• 192 Nausikaa, an asteroid named after the Greek mythology character
• Nausikaa Lake, a lake in Lee Township, Ontario, Canada
• Nausicaa, a 1971 film by Agnès Varda
• The homeworld of the Nausicaans, a fictional species in Star Trek

• Nausicaä of the Valley of the Wind (disambiguation)