BAO may refer to:

• Baccalaureus in Arte Obstetricia, Bachelor of Obstetrics, a medical degree unique to Ireland.
• Baryon acoustic oscillations, a signature of the early universe observed in galaxy surveys.
• Benny Anderssons Orkester
• Bullets And Octane

See also

• Bao (disambiguation)

eo:BAO fr:BAO it:BAO

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