Last name Umaa (Umaa 
, อูมา 
) , all over the world, is quite a common surname. The last name Umaa is characteristic of Nicaragua, where it is quite a common surname, Thailand, where it is quite a rare surname, and Costa Rica, where it is a rare surname. Measured by absolute frequency, the name is most common in Nicaragua, Thailand, and India. Likewise, Umaa is the forename as well as the last name.