Last name Йохай (Yohai 
, Yochai 
, Йохай 
) , in the entire world, is quite a rare family name. The surname Йохай is habitual in Israel, where it is quite a common surname, Uruguay, where it is a rare surname, and Argentina. Not in comparison with a country's population, the name is most common in Israel, the United States, and Argentina. Likewise, Йохай is the forename as well as the last name.