Around the world, Oelsen (Oelsen 
) is an extremely rare male first name. Much more frequently, Oelsen is the last name as well as the forename.
Mr, Brian, Byron, Karen, Petru, Rhona, Grant, Laura, Janet, James, Johan, Julie, Ellen, Erens, Emily, Helen, Wilma, Sharon, Alfred, Ashley, Cassie, Pamela, Antje, Petrus, Stacy, Sarie, Ms, Amy, Ron, Jan, Tom, Mary, Alma, Anja, Adam, Brad, Peet, Gary, Lynn, Jaco, John, Jean, Judy, Erik, Maria, Mandy, Sarah, Susan, and Derick