All around the world, Märtens (Märtens 
) is an extremely rare unknown gender first name. Predominantly, Märtens is the last name as well as the forename.
Lea, Jens, Timo, Till, Nina, Ingo, Olaf, Maria, Marie, Mario, Mandy, Miles, Sinan, Simon, Sonja, Andre, Aggie, Chris, Bernd, Benny, Beate, Karen, Jack, Jana, Lutz, Lisa, Jan, Tim, Ole, Udo, Uwe, Maik, Sara, Sven, Alex, Anke, Kolja, Axel, Kurt, Paul, Ralf, Rolf, Rene, Ruth, Rudi, Dirk, Glen, Lars, Bodo, and Kevin