Family name Масутани (Masutani 
, Масутани 
) , all over the world, is a rare cognomen. The family name Масутани is habitual in Brazil, where it is a very rare surname, Canada, and the United States. Measured by absolute frequency, it is the most numerous in the United States, Brazil, and China. Very seldom, Масутани is the forename as well as the last name.