Cognomen Rahael (Rahael 
, راهيل 
) , all over the world, is a rare surname. The cognomen Rahael is habitual in Trinidad and Tobago, where it is quite a rare surname, Nigeria, where it is a rare surname, and Netherlands, where it is a very rare surname. In absolute terms, this name is the most popular in Nigeria, Indonesia, and Tanzania. More prevalently, Rahael is the forename as well as the last name.