Around the globe, Dalgren (Dalgren 
) is an extremely rare unisex first name. Much more frequently, Dalgren is the last name as well as the forename.
Mr, Janet, James, Johan, Terry, Nancy, Erick, Martin, Maëva, Alfred, Anders, Annika, Amanda, Ashley, Bonnie, Robert, Lionel, Jennie, Thomas, Harold, Henrik, Marilyn, Loïs, Leona, David, Peter, Alf, Per, Guy, Jan, Jay, Sara, Anna, Cory, Beth, Doug, Salomã, Lars, John, Jill, Tina, Eric, Hans, Anton, Annie, Arika, April, Kajsa, Loic, and Andreas