Nausicaa is a character in the Greek epic poem Odyssey.

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

• Nausicaä (Nausicaä of the Valley of the Wind), the main character in Hayao Miyazaki's Nausicaä of the Valley of the Wind
• "Nausicaa" (Ulysses episode) an episode in James Joyce's novel Ulysses
• Nausicaá Centre National de la Mer (French National Sea Centre), an aquarium park near 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
• Nausicaa (Leighton), an 1878 painting by Frederic Leighton
• Nausicaa, a 1971 film by Agnès Varda
• Nausicaa, a 1961 opera by Peggy Glanville-Hicks
• The homeworld of the Nausicaans, a fictional race in Star Trek