Last name Formosus (Mushat 
, Formosus 
) , around the world, is a very rare family name. The family name Formosus is characteristic of the United States, where it is a very rare surname, the United Kingdom, where it is an extremely rare surname, and Nigeria. In absolute terms, it is commonest in the United States, Nigeria, and India. Likewise, Formosus is the forename as well as the last name.