All around the world, Mateas (Mateas 
) is a rare epicene first name. The forename Mateas is habitual in Croatia, where it is a rare male name, Romania, where it is a rare female name, and Philippines, where it is a very rare male name. Measured by absolute frequency, this name is the most popular in Philippines, Indonesia, and Romania. More prevalently, Mateas is the last name as well as the forename.