Last name Janul (Janul 
, Жанул 
) , throughout the world, is a rare surname. The family name Janul is habitual in Saudi Arabia, where it is a rare surname, Philippines, and Malaysia, where it is a very rare surname. Not in comparison with a country's population, it is the most numerous in Philippines, India, and Indonesia. More frequently, Janul is the forename as well as the last name.