Worldwide, Reiersen (Reiersen 
) is an extremely rare unknown gender first name. Much more prevalently, Reiersen is the last name as well as the forename.
Mr, Bjã, Karl, Rolf, Rune, Dana, Gary, Gerd, Geir, Gill, Lars, Line, Lisa, Lise, Lynn, Jack, Jake, John, Jodi, Jens, June, Judy, Cato, Arne, Sven, Stig, Ms, Jm, Ann, Ane, Bob, Roy, Dag, Liz, Jan, Jon, Thor, Tor, Ila, Ida, Iwa, Ole, Odd, Ulf, Mats, Mona, Sara, Siri, Eva, and Tore