Surname چهارشنبه (چهارشنبه 
, Çarşamba 
, Сәрсенбі) , all over the world, is a very rare cognomen. The cognomen چهارشنبه is habitual in Western Asia, particularly Turkey, where it is a very rare surname. More frequently, چهارشنبه is the forename as well as the last name.