Across the world, Dieltjens (Dieltjens 
) is an extremely rare male first name. Much more prevalently, Dieltjens is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Dieltjens | Belgium, South Africa, Spain, Switzerland, Netherlands |
Mr, Dirk, Gert, Leen, Ludo, Jody, Jens, Tana, Tine, Tuur, Nico, Nick, Nils, Nele, Elke, Eddy, Hans, Huib, Inge, Ilse, Orry, Marie, Daan, Rudy, Koen, Bart, Ms, Sam, Bie, Kim, Rik, Guy, Luc, Jan, Jop, Jef, Milla, Tom, Tim, Evy, Ivo, Wim, Marc, Mark, Sara, Stef, Sven, Anna, Ton, and Sofie