Cognomen Thoenen (Thoenen 
) , all around the world, is a rare last name. The surname Thoenen is habitual in Switzerland, where it is quite a rare surname, the United States, where it is a very rare surname, and Canada. Measured by absolute frequency, it is the most numerous in Switzerland, the United States, and Philippines. Very seldom, Thoenen is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Thoenen | Germany, Switzerland, Canada, United States, Philippines |
| hans thoenen Swiss psychiatrist (1928-2012), CH (b. 1928) |
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| dick thoenen American baseball player, US (b. 1944) |
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| tom thoenen college basketball player (1968–1969) Missouri |
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Mr, Rose, Rolf, Reto, Rita, Dale, Dawn, Gail, Gert, Gina, Paul, Lena, Lori, Jake, John, Joan, Joel, Jody, Todd, Nark, Noah, Lisa, Kyle, Kirk, Brad, Ed, Sam, Amy, Bev, Bob, Ken, Kim, Dan, Jim, Tim, Urs, Mary, Mark, Seth, Stan, Alan, Adam, Chad, Carl, Cari, Beth, Hans, and Fred