Surname Rettl (Rettl 
) , worldwide, is a rare last name. The surname Rettl is habitual in Austria, where it is quite a rare surname, Germany, where it is a very rare surname, and Brazil, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Rettl | Austria, Brazil, Germany, United States |
| christine rettl children's writer, translator and educator, AT (b. 1945) |
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| lisa rettl Austrian historian and curator, AT (b. 1972) |
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| martin rettl skeleton racer, AT (b. 1973) |
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| rené rettl researcher |
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