Last name Baua (Baua 
, Obaua 
) , throughout the world, is quite a rare cognomen. The family name Baua is characteristic of Philippines, where it is a rare surname, the Democratic Republic of the Congo, and Tanzania. Measured by absolute frequency, the name is most common in Philippines, India, and the Democratic Republic of the Congo. More prevalently, Baua is the forename as well as the last name.