Cognomen Trz (Trz 
, طرز 
, ترز) , worldwide, is a rare family name. The last name Trz is habitual in Serbia, where it is quite a rare surname, Poland, where it is a rare surname, and Algeria. Measured by absolute frequency, it is the most numerous in Bangladesh, Poland, and Algeria. Also, Trz is the forename as well as the last name.