Around the world, Petus (Petus 
) is a rare predominantly masculine, but scarcely female first name. The forename Petus is habitual in Aland Islands, where it is quite a common male name, Tanzania, where it is a very rare male name, and Indonesia. In absolute terms, it is the most numerous in India, Indonesia, and Tanzania. Also, Petus is the last name as well as the forename.