Surname Thietz (Thietz 
) , throughout the world, is a rare family name. The cognomen Thietz is habitual in Germany, where it is a rare surname, South Africa, where it is a very rare surname, and Israel. Measured by absolute frequency, it is commonest in Germany, South Africa, and the United States.
| VARIANT | COUNTRY |
|---|---|
| Thietz | Israel, South Africa, United States, Germany |
|
hans-peter thietz German politician (1934-2018), DE (b. 1934) |
|
| rudolf thietz German politician (1885-1966), DE (b. 1885) |
|