All over the world, ハルファン (Khalfan 
, ハルファン) is quite a common masculine first name. The first name ハルファン is characteristic of Oman, where it is quite a common boy's name, Tanzania, and United Arab Emirates, where it is quite a rare predominantly masculine, but scarcely girly name. Likewise, ハルファン is the last name as well as the forename.