The head of a military party branch is called a tawjihi, or guide.
This head of claim has been called the 'walk away' category.
The head of a public sector institution is usually called the director or principal.
In Turkey the head of the 81 provinces is called a wāli.
The head of government of each state is called the Premier.
After 1922 the Polish head of state was called prezydent (president).
The head of its planetary government was called the "Chairman."
The head of the department is called a prefect.
The head of a ballet company is called the artistic director.
Instead their head of government is called a Mayor in English.