In the entire world, Делиус (Delius 
, Делиус 
) is a rare masculine first name. The first name Делиус is characteristic of Tanzania, where it is a rare masculine name, the Dominican Republic, and Indonesia, where it is a very rare male name. In absolute terms, it is commonest in Tanzania, Indonesia, and the United States. Likewise, Делиус is the last name as well as the forename.