Cognomen Thegen (Thegen 
) , all over the world, is a very rare surname. The family name Thegen is characteristic of Germany, where it is a very rare surname, India, where it is an extremely rare surname, and the United States. Much less frequently, Thegen is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Thegen | United States, Germany, India, South Africa |
| andreas thegen (b. 1605) |
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| georg thegen German mathematician, DE (b. 1651) |
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| carl christian thegen DE (b. 1883) |
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Sean, Kate, Patrick, and Hans-Georg