Luiseño may refer to:

• the Luiseño people
• the Luiseño language
• Luiseño traditional narratives
• USS Luiseno (ATF-156)

• Pho
• Phoberomys
• Phoberomys pattersoni
• Phobetor
• Phobetron pithecium
• Phobia
• Phobias
• Phobic
• -phobic
• Phobic attitude
• Phobos
• Phobos 1
• Phobos 2
• Phoboscincus
• Phobos (god)
• Phobos Labs
• Phobos (moon)
• Phobos (mythology)
• Phobos program
• Phoca
• Phoca caspica
• Phocaea
• Phocaean
• Phocaeans
• Phoca groenlandica