Last name Reysh (Reysh 
, Рейш 
) , worldwide, is a rare cognomen. The surname Reysh is habitual in Israel, where it is quite a rare surname, Bulgaria, where it is a rare surname, and Kazakhstan. Measured by absolute frequency, it is the most numerous in Israel, Russia, and Ukraine. Much less frequently, Reysh is the forename as well as the last name.