Family name Testen (Testen 
) , worldwide, is a rare cognomen. The family name Testen is characteristic of Slovenia, where it is quite a rare surname, Austria, where it is a rare surname, and Croatia. In absolute terms, this name is the most popular in Slovenia, the United States, and Indonesia. Much less frequently, Testen is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Testen | Austria, United States, Indonesia, Slovenia, Croatia |
| ciril testen Slovene economist, SI (b. 1947) |
|
|
|
niko testen Slovenian kayaker, SI (b. 1997) |
|
| franc testen SI (b. 1948) |
|
|
| anna l testen researcher (ORCID 0000-0002-6504-9599) |
|
|
| polona kores testen SI (b. 1975) |
|
|
| petra testen SI |
|
|
| andrej testen SI |
|
|
| žan testen SI |
|
|
| ana testen SI (b. 1987) |
|
Mr, Marko, Megan, Sarah, Susan, Alben, Amber, Bryan, Karlo, Katie, Petra, Peter, Debra, Dario, David, Glenn, Lynda, Tracy, Đivo, Monica, Samuel, Sylvia, Iris, Albert, Eric, Niko, Ms, Ana, Bob, Roy, Rok, Dan, Tom, Mary, Mark, Mike, Miha, Mimi, Sara, Anna, Beth, Gary, Lisa, John, Joan, Test, Tina, Nika, and Andrea