Across the world, Marietha (Marietha 
) is a common feminine given name. The first name Marietha is characteristic of Tanzania, where it is quite a common female name, South Africa, where it is a rare female name, and Philippines. Very seldom, Marietha is the last name as well as the forename.
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