Last name جاريث (Gareth 
, Jareth 
, Jarreth ) , around the globe, is quite a rare surname. The last name جاريث is habitual in Nicaragua, where it is a rare surname, Ireland, and Cameroon. Measured by absolute frequency, the name is most common in Mexico, Indonesia, and the United Kingdom. Much more frequently, جاريث is the forename as well as the last name.