Last name Шадрак (Shadrack 
, Chadrac 
, Шадрак 
) , across the world, is a common cognomen. The last name Шадрак is characteristic of Sub-Saharan Africa, particularly Tanzania, where it is quite a common surname, Botswana, and Ghana. Measured by absolute frequency, it is commonest in Sub-Saharan Africa, particularly Tanzania, Nigeria, and Kenya. More frequently, Шадрак is the forename as well as the last name.