Surname Haens (Haens 
) , globally, is a rare family name. The surname Haens is habitual in Netherlands, where it is a rare surname, Germany, where it is a very rare surname, and Spain, where it is an extremely rare surname. Measured by absolute frequency, the name is most common in Netherlands, Germany, and the United States. Very seldom, Haens is the forename as well as the last name.