Last name Xá (Xa 
, Xá ) , all over the world, is quite a common cognomen. The cognomen Xá is habitual in Macao, where it is quite a common surname, Maldives, where it is quite a rare surname, and Myanmar. Measured by absolute frequency, the name is most common in Myanmar, Vietnam, and Morocco. Likewise, Xá is the forename as well as the last name.