DNAA may refer to:

• DnaA, protein that activates initiation of DNA replication in bacteria

• Nnamdi Azikiwe International Airport, Abuja, FCT, Nigeria (ICAO: DNAA)

• Driffield Navigation Amenities Association, an organisation formed in 1968 to restore the Driffield Navigation waterway

• Discharge not amounting to an acquittal, a type of discharge in Malaysian criminal procedure