Cognomen Ишак (Ishak 
, Ichak 
, Ишак 
) , globally, is a widespread surname. The last name Ишак is characteristic of Malaysia, where it is a common surname, Brunei, where it is quite a common surname, and Lebanon (explore the name in all countries). Not in comparison with a country's population, it most frequently occurs in Malaysia, Indonesia, and Algeria. Likewise, Ишак is the forename as well as the last name.