Family name Ernust (Ernest 
, Ernst 
, Arnošt 
) , around the globe, is a widespread last name. The cognomen Ernust is habitual in Tanzania, where it is quite a common surname, Liechtenstein, and Ghana (explore the name in all countries). Not in comparison with a country's population, it most frequently occurs in Nigeria, Germany, and Tanzania. More prevalently, Ernust is the forename as well as the last name.