Surname Heiðdís (Heiðdís 
) , across the world, is an extremely rare family name. Much more frequently, Heiðdís is the forename as well as the last name.
Lilja, Guðmundsdóttir, Gunnarsdóttir, Skarphéðinsdóttir, Viktorsdóttir, Eiríksdóttir, Einarsdóttir, Tryggvadóttir, Sigurðardóttir, Reynisdóttir, Björnsdóttir, Óskarsdóttir, Hreinsdóttir, Geirsdóttir, Agnarsdóttir, Snorradóttir, Jónsdóttir, Bjarnadóttir, and Sigurjónsdóttir