Cognomen Missak (Мисак 
, ميساك 
, Missak 
) , in all the world, is quite a rare surname. The surname Missak is habitual in Armenia, where it is quite a common surname, Ukraine, where it is quite a rare surname, and Switzerland, where it is a rare surname. Measured by absolute frequency, it is the most numerous in Armenia, Ukraine, and Russia. Likewise, Missak is the forename as well as the last name.