Family name Diezi (Diezi 
) , in the entire world, is a rare surname. The last name Diezi is characteristic of Western Europe, particularly Switzerland, where it is quite a rare surname, Netherlands, where it is a very rare surname, and Germany. In absolute terms, the name is most common in Switzerland, the United States, and Germany. More prevalently, Diezi is the forename as well as the last name.
| reto diezi Swiss athletics competitor, CH (b. 1949) |
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| dominique diezi Swiss swimmer, CH (b. 1977) |
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| thomas diezi college basketball player (2004–2005) Drake |
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| diezi m researcher |
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| dominik diezi Swiss politician, CH |
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| stefan diezi jr. Swiss ice hockey player, CH (b. 1999) |
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