Cognomen Liaan (Liaan 
) , all over the world, is an extremely rare last name. The cognomen Liaan is habitual in South Africa, where it is an extremely rare surname, and the United Kingdom. Predominantly, Liaan is the forename as well as the last name.
Ras, Fourie, Myburgh, Strydom, Scriven, Coetzee, Booysen, Kirsten, Kirkham, Paulsen, Pechera, Pienaar, Lategan, Jordaan, Thomsen, Navarro, Heinlein, Ungerer, Kritzinger, Dorfling, Ferreira, Swanepoel, Horton, Pretorius, Herman, Jansen, Nat, Wyk, Zyl, Smit, Gous, Merwe, Aardt, Botes, Botha, Block, Roodt, Louis, Nolte, Haupt, Muller, Cronje, Barker, Beukes, Buurke, Kruger, Gerber, Jacobs, and Van Der Merwe