Last name Heinn (Heinn 
) , worldwide, is quite a rare cognomen. The surname Heinn is habitual in South-eastern Asia, particularly Myanmar, where it is quite a rare surname, Singapore, where it is a rare surname, and Malaysia, where it is a very rare surname. In absolute terms, it is the most numerous in Myanmar, the United States, and Malaysia. Also, Heinn is the forename as well as the last name.