Cognomen Marietha (Marietha 
) , across the world, is a rare last name. The surname Marietha is characteristic of Honduras, where it is a rare surname, Nicaragua, where it is a very rare surname, and Indonesia. Not in comparison with a country's population, it is commonest in Indonesia, Nigeria, and Honduras. Much more frequently, Marietha is the forename as well as the last name.
Nel, Venter, Wilson, Mapunda, Morales, Michael, Mngulwi, Charles, Coetzee, Coetzer, Kapinga, Richard, Joubert, Olivier, Schoeman, Ndunguru, Emmanuel, Koekemoer, Rodriguez, Robbertse, Underwood, Du Plessis, Thomas, Jonker, Joseph, Beukes, Alex, Paul, John, Hart, Hall, Marco, Malan, Mbele, Simon, Sulle, Oosthuizen, Smith, Burra, Komba, Paulo, Perez, Peter, Davis, Lucas, Marais, Masalu, Muller, Bayyo, and Bezuidenhout