Surname Шамай (Shamay 
, Shamai 
, Шамай 
) , worldwide, is a rare family name. The last name Шамай is habitual in Israel, where it is quite a rare surname, Slovakia, and Czechia, where it is a rare surname. In absolute terms, the name is most common in Israel, Russia, and the United States. Also, Шамай is the forename as well as the last name.