Cognomen Oersen (Oersen 
) , in the entire world, is a rare family name. The cognomen Oersen is habitual in Sub-Saharan Africa, particularly South Africa, where it is a rare surname. Very seldom, Oersen is the forename as well as the last name.
Anna, Julius, Ntombi, Faraad, Marlize, Stephen, Rowayda, Rudolph, Johann, Lizelle, Natanya, Hendrik, Samantha, Riedwaan, Lynnette, Nicolene, Sheridene, Lusanda, Carmenita, Linsay, Gordon, Paul, Dora, John, Shane, Shawn, Beryl, Robyn, Leeren, Dayne, Johan, Nadia, Martha, Samuel, Sharin, Rodger, Rudolf, Lydia, and Elizabeth